e. 5(3 – 2x) + 5(x – 4) = 6 – 4x
g. 2(4x – 8) – 7(3 + x) = |-4|(3 – 2)
k. -7(5 – x) – 2(x – 10) = 15
m. -4(x + 1) + ( 89x – 3) = 24
q. 10(x – 7) – 8(x + 5) = 6.(-5) + 24
Những câu hỏi liên quan
Bài toán 3 : Tìm x, biết.a. 2(x – 5) – 3(x + 7) 14 b. 5(x – 6) – 2(x + 3) 12c. 3(x – 4) – (8 – x) 12 d. -7(3x – 5) + 2(7x – 14) 28e. 5(3 – 2x) + 5(x – 4) 6 – 4x f. -5(2 – x) + 4(x – 3) 10x – 15g. 2(4x – 8) – 7(3 + x) |-4|(3 – 2) h. 8(x – |-7|) – 6(x – 2) |-8|.6 – 50k. -7(5 – x) – 2(x – 10) 15 l. 4(x – 1) – 3(x – 2) -|-5|m. -4(x + 1) + 89x – 3) 24 n. 5(x – 30 – 2(x + 6) 9o. -3(x – 5) + 6(x + 2) 9 p. 7(x – 9) – 5(6 – x) – 6 + 11xq. 10(x – 7) – 8(x + 5) 6.(-5) + 24
Đọc tiếp
Bài toán 3 : Tìm x, biết.
a. 2(x – 5) – 3(x + 7) = 14 b. 5(x – 6) – 2(x + 3) = 12
c. 3(x – 4) – (8 – x) = 12 d. -7(3x – 5) + 2(7x – 14) = 28
e. 5(3 – 2x) + 5(x – 4) = 6 – 4x f. -5(2 – x) + 4(x – 3) = 10x – 15
g. 2(4x – 8) – 7(3 + x) = |-4|(3 – 2) h. 8(x – |-7|) – 6(x – 2) = |-8|.6 – 50
k. -7(5 – x) – 2(x – 10) = 15 l. 4(x – 1) – 3(x – 2) = -|-5|
m. -4(x + 1) + 89x – 3) = 24 n. 5(x – 30 – 2(x + 6) = 9
o. -3(x – 5) + 6(x + 2) = 9 p. 7(x – 9) – 5(6 – x) = – 6 + 11x
q. 10(x – 7) – 8(x + 5) = 6.(-5) + 24
nhiều quá :((
\(a,2\left(x-5\right)-3\left(x+7\right)=14\)
\(2x-10-3x-21=14\)
\(-x-31=14\)
\(-x=45\)
\(x=45\)
\(b,5\left(x-6\right)-2\left(x+3\right)=12\)
\(5x-30-2x-6=12\)
\(3x-36==12\)
\(3x=48\)
\(x=16\)
\(c,3\left(x-4\right)-\left(8-x\right)=12\)
\(3x-12-8+x=0\)
\(4x-20=0\)
\(4x=20\)
\(x=5\)
Cố nốt nha bn !
cảm ơn, bn nha:)))
mà hình như bạn TOP 3 trả lời câu hỏi pải ko nhỉ???
d, \(-7\left(3x-5\right)+2\left(7x-14\right)=28\)
\(\Leftrightarrow-21x+35+14x-28=28\Leftrightarrow-7x=21\Leftrightarrow x=-3\)
e, \(5\left(3-2x\right)+5\left(x-4\right)=6-4x\)
\(\Leftrightarrow15-6x+5x-20=6-4x\Leftrightarrow-5-x=6-4x\)
\(\Leftrightarrow-11+3x=0\Leftrightarrow x=\frac{11}{3}\)
f, \(-5\left(2-x\right)+4\left(x-3\right)=10x-15\)
\(\Leftrightarrow-10+5x+4x-12=10x-15\Leftrightarrow-22+9x=10x-15\)
\(\Leftrightarrow-7-x=0\Leftrightarrow x=-7\)
Xem thêm câu trả lời
Tìm x biết:a) 2(4x-8)-7(3+x)|-4|.(3-2)b) 8(x-|-7|)-6(x-2)|-8|.6-50c) -7(5-x)-2(x-10)15d) 4(x-1)-3(x-2)-|-5|e) -4(x+1)+(89x-3)24f) 5(x-30-2(x+6)9g) -3(x-5)+6(x+2)9h) 7(x-9)-5(6-x)-6+11xk) 10(x-7)-8(x+5)6.(-5)+24 THANKS TRƯỚC !!!
Đọc tiếp
Tìm x biết:
a) 2(4x-8)-7(3+x)=|-4|.(3-2)
b) 8(x-|-7|)-6(x-2)=|-8|.6-50
c) -7(5-x)-2(x-10)=15
d) 4(x-1)-3(x-2)=-|-5|
e) -4(x+1)+(89x-3)=24
f) 5(x-30-2(x+6)=9
g) -3(x-5)+6(x+2)=9
h) 7(x-9)-5(6-x)=-6+11x
k) 10(x-7)-8(x+5)=6.(-5)+24
=> THANKS TRƯỚC !!!
a) 2(4x-8)-7(3+x)=|-4|.(3-2)
8x-16-21-7x=4
8x-7x=4+16+21
x=41
Vậy x=41
b) 8(x-|-7|)-6(x-2)=|-8|.6-50
8x-56-6x+12=8.6-50
8x-6x=48-50+56-12
2x=42
x=42:2
x=21
Vậy x=21
c) -7(5-x)-2(x-10)=15
-35+7x-2x+20=15
7x-2x=15+35-20
5x=30
x=30:5
x=6
Vậy x=6
d) 4(x-1)-3(x-2)=-|-5|
4x-4-3x+6=-5
4x-3x=-5+4-6
x=-7
Vậy x=-7
e) -4(x+1)+(89x-3)=24
-4x-4+89x-3=24
-4x+89x=24+4+3
85x=31
x=31/85
f) 5(x-30)-2(x+6)=9
5x-150-2x-12=9
5x-2x=9+150+12
3x=171
x=171:3
x=57
Vậy x=57
g) -3(x-5)+6(x+2)=9
-3x+15+6x+12=9
-3x+6x=9-15-12
3x=-18
x=-18:3
x=-6
Vậy x=-6
h) 7(x-9)-5(6-x)=-6+11x
7x-63-30+5x=-6+11x
7x+5x-11x=-6+62+30
x=86
Vậy x=86
k) 10(x-7)-8(x+5)=6.(-5)+24
10x-70-8x-40=-30+24
10x-8x=-30+24+70+40
2x=104
x=104:2
x=52
Vậy x=52
g.2(4x-8)-7(3+x)|-4|(3-2)h. 8(x – |-7|) – 6(x – 2) |-8|.6 – 50k. -7(5 – x) – 2(x – 10) 15l. 4(x – 1) – 3(x – 2) -|-5|m. -4(x + 1) + 89x – 3) 24n. 5(x – 30 – 2(x + 6) 9o. -3(x – 5) + 6(x + 2) 9p. 7(x – 9) – 5(6 – x) – 6 + 11xq. 10(x – 7) – 8(x + 5) 6.(-5) + 24mình cần rất gấp, giúp mình nha
Đọc tiếp
g.2(4x-8)-7(3+x)=|-4|(3-2)
h. 8(x – |-7|) – 6(x – 2) = |-8|.6 – 50
k. -7(5 – x) – 2(x – 10) = 15
l. 4(x – 1) – 3(x – 2) = -|-5|
m. -4(x + 1) + 89x – 3) = 24
n. 5(x – 30 – 2(x + 6) = 9
o. -3(x – 5) + 6(x + 2) = 9
p. 7(x – 9) – 5(6 – x) = – 6 + 11x
q. 10(x – 7) – 8(x + 5) = 6.(-5) + 24
mình cần rất gấp, giúp mình nha
Giờ cần nữa ko bạn
Mình làm
cho
@@@@
Bàitoán1 : Tìm x, biết.a. 2(x – 5) – 3(x + 7) 14b. 5(x – 6) – 2(x + 3) 12c. 3(x – 4) – (8 – x) 12d. -7(3x – 5) + 2(7x – 14) 28e. 5(3 – 2x) + 5(x – 4) 6 – 4xf. -5(2 – x) + 4(x – 3) 10x – 15g. 2(4x – 8) – 7(3 + x) |-4|(3 – 2)h. 8(x – |-7|) – 6(x – 2) |-8|.6 – 50k. -7(5 – x) – 2(x – 10) 15l. 4(x – 1) – 3(x – 2) -|-5|m. -4(x + 1) + 89x – 3) 24n. 5(x – 30 – 2(x + 6) 9o. -3(x – 5) + 6(x + 2) 9p. 7(x – 9) – 5(6 – x)...
Đọc tiếp
Bàitoán1 : Tìm x, biết.
a. 2(x – 5) – 3(x + 7) = 14
b. 5(x – 6) – 2(x + 3) = 12
c. 3(x – 4) – (8 – x) = 12
d. -7(3x – 5) + 2(7x – 14) = 28
e. 5(3 – 2x) + 5(x – 4) = 6 – 4x
f. -5(2 – x) + 4(x – 3) = 10x – 15
g. 2(4x – 8) – 7(3 + x) = |-4|(3 – 2)
h. 8(x – |-7|) – 6(x – 2) = |-8|.6 – 50
k. -7(5 – x) – 2(x – 10) = 15
l. 4(x – 1) – 3(x – 2) = -|-5|
m. -4(x + 1) + 89x – 3) = 24
n. 5(x – 30 – 2(x + 6) = 9
o. -3(x – 5) + 6(x + 2) = 9
p. 7(x – 9) – 5(6 – x) = – 6 + 11x
q. 10(x – 7) – 8(x + 5) = 6.(-5) + 24
help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
5(3-2x) 5(4-x)=6-4x
-5(2-x)+4(x-3)=10x-15
-7(5-x)-2(x-10)=15
-4(x+1)+89x-3)=24
5(x-30-2(x+6)=9
help,cần gấp
a, thiếu đề
b, -5 ( 2 - x ) + 4 ( x - 3 ) = 10x - 15
<=> -10 + 5x + 4x - 12 = 10x - 15
<=> -x = 7 <=> x = 7
c,-7(5-x)-2(x-10)=15
<=> -35 + 7x - 2x + 20 = 15 <=> 5x = 30 <=> x = 6
d, -4(x+1) + 89x - 3 = 24
<=> 85x = 31 <=> x = 31/85
e, 5(x-30-2(x+6)) = 9
<=> 5 (-x-49) = 9 <=> -5x = 254 <=> x = -254/5
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b: =>-10+5x+4x-12=10x-15
=>9x-10x=-15+22
=>-x=7
hay x=-7
c: =>-35+7x-2x+20=15
=>5x-15=15
=>x=6
d: =>-4x-4+72x-24=24
=>68x-32=24
hay x=14/17
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giải các phương trình sau: a) 4x.(2x+3) - x.(8x-1) 5.(x+2) b) (3x-5).(3x+5) - x.(9x-1) 4 c) 3 - 4x . (25-2x) 8x^2 + x - 300 d) 2. (1-3x/5) - 2+3x/10 7-3.(2x+1)/4 e) 5x + 2/6 - 8x - 1 /3 4x + 2 /5 - 5 f) 5x - 4/2 16x + 1/7 g) 12x + 5 / 32x - 7/4 h) 3t - 8/12 5-t /8 i) 5u + 6/15 u - 4 /10 k) 3.(x-11)/4 3. (x+1) - 2.(2x+ 5)/10 l) 14 và 1/2 - 2. (x+3)/5 3x/2 - 2. (x-7 )/3 m ) 2x -5 / 6 - x +2 5x - 3/ 3 - 6x - 7/ 4 + x n) x-4/5 + 3x - 2/10 - x 2x-5/3 - 7x+2/6 mình đang cần gấp
Đọc tiếp
giải các phương trình sau:
a) 4x.(2x+3) - x.(8x-1)= 5.(x+2)
b) (3x-5).(3x+5) - x.(9x-1) = 4
c) 3 - 4x . (25-2x) = 8x^2 + x - 300
d) 2. (1-3x/5) - 2+3x/10 = 7-3.(2x+1)/4
e) 5x + 2/6 - 8x - 1 /3 = 4x + 2 /5 - 5
f) 5x - 4/2 = 16x + 1/7
g) 12x + 5 / 3=2x - 7/4
h) 3t - 8/12 = 5-t /8
i) 5u + 6/15 = u - 4 /10
k) 3.(x-11)/4 = 3. (x+1) - 2.(2x+ 5)/10
l) 14 và 1/2 - 2. (x+3)/5 = 3x/2 - 2. (x-7 )/3
m ) 2x -5 / 6 - x +2 = 5x - 3/ 3 - 6x - 7/ 4 + x
n) x-4/5 + 3x - 2/10 - x = 2x-5/3 - 7x+2/6
mình đang cần gấp
giải các phương trình sau: a) 4x.(2x+3) - x.(8x-1) 5.(x+2) b) (3x-5).(3x+5) - x.(9x-1) 4 c) 3 - 4x . (25-2x) 8x^2 + x - 300 d) 2. (1-3x/5) - 2+3x/10 7-3.(2x+1)/4 e) 5x + 2/6 - 8x - 1 /3 4x + 2 /5 - 5 f) 5x - 4/2 16x + 1/7 g) 12x + 5 / 32x - 7/4 h) 3t - 8/12 5-t /8 i) 5u + 6/15 u - 4 /10 k) 3.(x-11)/4 3. (x+1) - 2.(2x+ 5)/10 l) 14 và 1/2 - 2. (x+3)/5 3x/2 - 2. (x-7 )/3 m ) 2x -5 / 6 - x +2 5x - 3/ 3 - 6x - 7/ 4 + x n) x-4/5 + 3x - 2/10 - x 2x-5/3 - 7x+2/6 mình đang cần gấp
Đọc tiếp
giải các phương trình sau:
a) 4x.(2x+3) - x.(8x-1)= 5.(x+2)
b) (3x-5).(3x+5) - x.(9x-1) = 4
c) 3 - 4x . (25-2x) = 8x^2 + x - 300
d) 2. (1-3x/5) - 2+3x/10 = 7-3.(2x+1)/4
e) 5x + 2/6 - 8x - 1 /3 = 4x + 2 /5 - 5
f) 5x - 4/2 = 16x + 1/7
g) 12x + 5 / 3=2x - 7/4
h) 3t - 8/12 = 5-t /8
i) 5u + 6/15 = u - 4 /10
k) 3.(x-11)/4 = 3. (x+1) - 2.(2x+ 5)/10
l) 14 và 1/2 - 2. (x+3)/5 = 3x/2 - 2. (x-7 )/3
m ) 2x -5 / 6 - x +2 = 5x - 3/ 3 - 6x - 7/ 4 + x
n) x-4/5 + 3x - 2/10 - x = 2x-5/3 - 7x+2/6
mình đang cần gấp
giải các phương trình sau: a) 4x.(2x+3) - x.(8x-1) 5.(x+2) b) (3x-5).(3x+5) - x.(9x-1) 4 c) 3 - 4x . (25-2x) 8x^2 + x - 300 d) 2. (1-3x/5) - 2+3x/10 7-3.(2x+1)/4 e) 5x + 2/6 - 8x - 1 /3 4x + 2 /5 - 5 f) 5x - 4/2 16x + 1/7 g) 12x + 5 / 32x - 7/4 h) 3t - 8/12 5-t /8 i) 5u + 6/15 u - 4 /10 k) 3.(x-11)/4 3. (x+1) - 2.(2x+ 5)/10 l) 14 và 1/2 - 2. (x+3)/5 3x/2 - 2. (x-7 )/3 m ) 2x -5 / 6 - x +2 5x - 3/ 3 - 6x - 7/ 4 + x n) x-4/5 + 3x - 2/10 - x 2x-5/3 - 7x+2/6 mình đang cần gấp
Đọc tiếp
giải các phương trình sau:
a) 4x.(2x+3) - x.(8x-1)= 5.(x+2)
b) (3x-5).(3x+5) - x.(9x-1) = 4
c) 3 - 4x . (25-2x) = 8x^2 + x - 300
d) 2. (1-3x/5) - 2+3x/10 = 7-3.(2x+1)/4
e) 5x + 2/6 - 8x - 1 /3 = 4x + 2 /5 - 5
f) 5x - 4/2 = 16x + 1/7
g) 12x + 5 / 3=2x - 7/4
h) 3t - 8/12 = 5-t /8
i) 5u + 6/15 = u - 4 /10
k) 3.(x-11)/4 = 3. (x+1) - 2.(2x+ 5)/10
l) 14 và 1/2 - 2. (x+3)/5 = 3x/2 - 2. (x-7 )/3
m ) 2x -5 / 6 - x +2 = 5x - 3/ 3 - 6x - 7/ 4 + x
n) x-4/5 + 3x - 2/10 - x = 2x-5/3 - 7x+2/6
mình đang cần gấp
giải các phương trình sau: a) 4x.(2x+3) - x.(8x-1) 5.(x+2) b) (3x-5).(3x+5) - x.(9x-1) 4 c) 3 - 4x . (25-2x) 8x^2 + x - 300 d) 2. (1-3x/5) - 2+3x/10 7-3.(2x+1)/4 e) 5x + 2/6 - 8x - 1 /3 4x + 2 /5 - 5 f) 5x - 4/2 16x + 1/7 g) 12x + 5 / 32x - 7/4 h) 3t - 8/12 5-t /8 i) 5u + 6/15 u - 4 /10 k) 3.(x-11)/4 3. (x+1) - 2.(2x+ 5)/10 l) 14 và 1/2 - 2. (x+3)/5 3x/2 - 2. (x-7 )/3 m ) 2x -5 / 6 - x +2 5x - 3/ 3 - 6x - 7/ 4 + x n) x-4/5 + 3x - 2/10 - x 2x-5/3 - 7x+2/6 mình đang cần gấp
Đọc tiếp
giải các phương trình sau:
a) 4x.(2x+3) - x.(8x-1)= 5.(x+2)
b) (3x-5).(3x+5) - x.(9x-1) = 4
c) 3 - 4x . (25-2x) = 8x^2 + x - 300
d) 2. (1-3x/5) - 2+3x/10 = 7-3.(2x+1)/4
e) 5x + 2/6 - 8x - 1 /3 = 4x + 2 /5 - 5
f) 5x - 4/2 = 16x + 1/7
g) 12x + 5 / 3=2x - 7/4
h) 3t - 8/12 = 5-t /8
i) 5u + 6/15 = u - 4 /10
k) 3.(x-11)/4 = 3. (x+1) - 2.(2x+ 5)/10
l) 14 và 1/2 - 2. (x+3)/5 = 3x/2 - 2. (x-7 )/3
m ) 2x -5 / 6 - x +2 = 5x - 3/ 3 - 6x - 7/ 4 + x
n) x-4/5 + 3x - 2/10 - x = 2x-5/3 - 7x+2/6
mình đang cần gấp