tìm x : [ (3x - 9) : 10 ] + 2 = 12
Những câu hỏi liên quan
/3x+2/+/10+3x/=8
/9-x/+/x+5/=12
/2x+1/+/x-y/+/2x-9/=10
Tìm x,y
AI GIẢI ĐÚNG MÌNH TÍCH CHO
tìm X
1/4+2.(3.x-2/3)=1
(1/2+2X). (2x-3)=0
(4x-5).(5/4.x-2)=0
1/9-(2.x+1/2)mũ 2=0
9.(3x-1/2)mũ 2 =4
1/2.x+2/3.x-1=-10/3
X+1/12=-3/9
a) \(x=\dfrac{25}{72}\)
b)\(x=-\dfrac{1}{4}\)
\(x=\dfrac{3}{2}\)
c)\(x=\dfrac{5}{4}\) hoặc
x \(=\dfrac{8}{5}\)
d và e chịu vì mk kg giỏi lắm về mũ
f)\(x=-2\)
G)\(x=-\dfrac{5}{12}\)
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Tìm x biết
a) (x+2).(x+3) - (x-2).(x+5)=10
b) (3x+2). (2x+9) - (x+2). (8x+11)=(x+1).(3-2x)
c) 3.(2x-1).(3x-1)-(2x-3).(9x-1)=0
d) (5x-8).(4x-5)-(3x-4).(2x+12)=12
a)(x+2).(x+3)-(x-2).(x+5)=10
( x^2 +3x+2x+6)-(x^2 +5x-2x-10)=10
x^2 +3x+2x+6-x^2 -5x+2x+10-10=0
2x+6=0
2x=-6
x=-3
Tìm x
a,-5×(-x+7)-3×(-x-5)=-4×(12-x)+48
b,-2×(15-3x)-4×(-7x+8)=,-5-9×(-2x+1)
c,7×(-x-7)-5×(-x-3)=12×(3-x)
d,5×(-3x-7)-4×(-2x-11)=7×(4x+10)+9
a ) \(-5\times\left(-x+7\right)-3\times\left(-x-5\right)=-4\times\left(12-x\right)+48\)
\(\Leftrightarrow5x-35+3x+15=-48+4x+48\)
\(\Leftrightarrow5x-3x+4x=35-15-48+48\)
\(\Leftrightarrow2x=20\)
\(\Leftrightarrow x=10\)
b ) \(-2\times\left(15-3x\right)-4\times\left(-7x+8\right)=-5-9\times\left(-2x+1\right)\)
\(\Leftrightarrow-30+6x-28x-32=-5+18x-9\)
\(\Leftrightarrow6x-28x-18x=30+32-5-9\)
\(\Leftrightarrow-40x=48\)
\(\Leftrightarrow x=-1.2\)
c, 7 . ( - x - 7 ) - 5 . ( - x - 3 ) = 12 . ( 3 - x)
<=> - 7x - 49 + 5x + 15 = 36 - 12x
<=> - 2x + 12x = 36 - 15 + 49
<=> 10 x = 70
<=> x = 7
Vẫy x = 7
d, 5 . ( - 3x - 7 ) - 4 . ( - 2x - 11 ) = 7 . ( 4x + 10) + 9
<=> - 15x + 8x + 44 = 28x + 70 + 9
<=> - 7x + 44 = 28x + 79
<=> - 7x - 28x = 79 - 44
<=> - 35x = 35
<=> x = - 1
Vậy x = - 1
Hc tốt
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Tìm x, biết:
x.(2x-8).(x^2-4)=0
-17.|x|=-85
|x|=|-10|
3x + 5 = 4x - 9
72 - 3x=5x+8
(x^2 - 36).(2|x| - 12).x = 0
Tìm x biết
a)7(x-1)+10=80
b)14-3(x+5)=2
c) 65-5(3x-1)=15
d)4(12-3x)-9=3
a)7(x-1)+10=80 b)14-3(x+5)=2 c)65-5(3x-1)=15 d)4(12-3x)-9=3
7(x-1)=80-10 3(x+5)=14-2 5(3x-1)=65-15 4(12-3x)=3+9
7(x-1)=70 3(x+5)=12 5(3x-1)=50 4(12-3x)=12
(x-1)=70:7 (x+5)=12:3 (3x-1)=50:5 (12-3x)=12:4
x-1=10 x+5=4 3x-1=10 12-3x=3
x=10+1 x=4-5 3x=10+1 3x=12-3
x=11 x=(-1) 3x=11 3x=9
x=11:3 x=9:3
x=3,6...7 x=3
Tìm số hữu tỉ x
a) x/2 - (3x/5 - 13/5 ) = - (7/5 + 7/10 .x)
b) 2/3x - 3/12 = 4/5 - (7/x - x)
c) 3 - 2/2x -3 = 2/5 - 2/9-6x - 3/2
a. x/2-3x/5+13/5=-7/5-7/10x
-7/5-x/2+3x/5-13/5=7/10x
-x/2+3x/5-4=7/10x
7/10x-3x/5+x/2=-4
7x-6x+5x/10=-4
6x=-40
x=-20/3
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a, (x-1)*x+x^2-7=8
b, (2x+1)*x-(2x-1)=9
c, (x-1)*(x+1)-(x^2+9)=12
d, (3x+1)*(x+1)-x(3x+1)
e, (2x-1)*x^2*(x^3-x^2+x-1)=10
tìm x biết
C1: 3-6-9+12+15-18-21+24+...-90-93+96+99
C2: Tìm x biết:
x + 2 € Ư(3x + 10), x € N.