4. |x - 7| - 3. (-5) = - 2. |7 - x| - 10
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Những câu hỏi liên quan
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-4/7-x=3/5-2x
3/7.x-2/3.x=10/21
\(-\dfrac{4}{7}-x=\dfrac{3}{5}-2x\\ \Rightarrow-x+2x=\dfrac{3}{5}+\dfrac{4}{7}\\ \Rightarrow x=\dfrac{21}{35}+\dfrac{20}{35}\\ \Rightarrow x=\dfrac{41}{35}\)
Vậy `x=41/35`
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\(\dfrac{3}{7}x-\dfrac{2}{3}x=\dfrac{10}{21}\\ \Rightarrow\left(\dfrac{3}{7}-\dfrac{2}{3}\right)x=\dfrac{10}{21}\\ \Rightarrow\left(\dfrac{9}{21}-\dfrac{14}{21}\right)x=\dfrac{10}{21}\\ \Rightarrow\dfrac{-5}{21}x=\dfrac{10}{21}\\ \Rightarrow x=\dfrac{10}{21}:\left(-\dfrac{5}{21}\right)\\ \Rightarrow x=-2\)
Vậy `x=-2`
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a)
-4/7 - x = 3/5 - 2x
2x - x = 3/5 + 4/7
x = 41/35
Vậy x = 41/35
b)
3/7.x - 2/3.x = 10/21
x(3/7 - 2/3) = 10/21
x.(-5/21) = 10/21
x = 10/21 : (-5/21) = -2
Vậy x = -2
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tìm giá trị lớn nhất
M=5- |x+1/2|
N=-|x-3/5|-5/7
P-x^2+3/7
Q=-(x-5)^2-4/9
H=4x-x^2-4
help me ,help me chìu ny 18/8 mik nộp rùi
Tìm số nguyên x biết
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
f.-2.(x+3)-15=3.(4+2x)+7
giúp tớ nhé tớ đang cần gấp help me
47/53. ( 17/3 - 53/47) + 17/3 .( 6/17 - 47/53)
5/7 . ( 1/2 -1/3 +4/7 ) + ( 1/3 - 1/2 -4/7 ) :7/5
tim x
3 (x-1/2 ) - 5 ( x- 2/3) = 3/2x
help me mik dang can gap . cam on
help me!!!
a)17/6-(x-7/6)=7/4
b)3/35-(3/5-x)=2/7
c)11/12-(2/5+x)=2/3
giúp mk với mk đang vội
a)2.25 hoac 9/4
b)0.8 hoac 4/5
c)-0.15 hoab -3/20
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1, Tính
a, 7/8 - 2/3
b, 7/8 - 2/3 × 3/4
2, Tìm X
a, 5/8 - x = 5/9
b, 3/4 : x = 2/5
( please help me!!
\(1-\)\(a,\frac{7}{8}-\frac{2}{3}=\frac{21}{24}-\frac{16}{24}=\frac{5}{24}\)
\(b,\frac{7}{8}-\frac{2}{3}\times\frac{3}{4}=\frac{7}{8}-\frac{1}{2}=\frac{7}{8}-\frac{4}{8}=\frac{3}{8}\)
\(2-\)\(a,\frac{5}{8}-x=\frac{5}{9}\)
\(x=\frac{5}{8}-\frac{5}{9}\)
\(x=\frac{5}{72}\)
\(b,\frac{3}{4}:x=\frac{2}{5}\)
\(x=\frac{3}{4}:\frac{2}{5}\)
\(x=\frac{15}{8}\)
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1, Tính:
\(\frac{7}{8}\) - \(\frac{2}{3}\) = \(\frac{21}{24}\) - \(\frac{16}{24}\) = \(\frac{5}{24}\)
\(\frac{7}{8}\) - \(\frac{2}{3}\) x \(\frac{3}{4}\) = \(\frac{7}{8}\) - \(\frac{1}{2}\) = \(\frac{7}{8}\) - \(\frac{4}{8}\) = \(\frac{3}{8}\)
2, Tìm x
\(\frac{5}{8}\)- x = \(\frac{5}{9}\)
x = \(\frac{5}{8}\)- \(\frac{5}{9}\)
x = \(\frac{5}{72}\)
\(\frac{3}{4}\): x = \(\frac{2}{5}\)
x = \(\frac{3}{4}\) : \(\frac{2}{5}\)
x = \(\frac{15}{8}\)
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TÌM X, BIẾT:
a) 3 . ( 1/2 - x ) + 1/3 = 7/6 - x
b) 4 . ( 1/2 - x ) - 5 . ( x - 3/10 ) = 7/4
c) -3/2 . ( 4/5 - 2/3 ) + x = 4 . ( x - 1/2 )
d) 2 . ( 3/2 - x ) - 1/3 = 7x - 1/4
e) 1/5 . ( -3/5 -10 ) + 5x = x - 2/3
f) -3/2 . ( 5 - 1/6 ) + 4 . ( x - 1/2 ) = 1
~ PLEASE HELP ME ~
Nguyễn Trà My
Phần a)
\(3\times\left(\frac{1}{2}-x\right)+\frac{1}{3}=\frac{7}{6}-x\)
\(32-3x+13=76-x\)
\(116-3x=76-x\)
\(116-76=3x-x\)
\(46=2x\)
\(x=46\div2\)
\(x=13\)
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a) \(3.\left(\frac{1}{2}-x\right)+\frac{1}{3}=\frac{7}{6}-x\)
\(3.\left(\frac{1}{2}-x\right)+x=\frac{7}{6}-\frac{1}{3}\)
\(\Rightarrow\frac{3}{2}-3x+x=\frac{5}{6}\)
\(-3x+x=\frac{5}{6}-\frac{3}{2}\)
\(2x=-\frac{2}{3}\)
\(x=-\frac{2}{3}:2\)
\(x=-\frac{1}{3}\)
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1. 4 + x = 7 - 2x
2. 5 + x = 8,3 + 4,7 - x
3. x + 12 = 35 + ½x
4. 6 + x = 7⅓ + 2 - x
5. 20x + 4 = 19,2 + 15x
6. x + 5 = 8 2/5 - 4x
7. 3 (x +1) = 13,5
8. 32 - (32 - x) = 32
9. 5x - 12 3/5 = 0
10. x - 10/3 = 0
P/s : Please, help me 😋😋
4 + x = 7 - 2x
4 + x + 2x = 7
4 + 3x = 7
3x = 7 - 4
3x = 3
x = 3 : 3
x =1
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5 + x = 8,3 + 4,7 - x
5 + x + x = 8,3 + 4,7
5 + 2x = 13
2x = 13 - 5
2x = 8
x = 8 : 2
x= 4
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Tìm x, biết:
1, 7.(x - 3) - 5.(3 - x) = 11 - 5
2, -5.(2 - x) + 4.(x - 3) = 10x - 1
3, 6.|x - 3| - 9.|x - 3| = -21
4, 4.|x - 7| - 3.(-5) = -2.|7 - x| - 10
Help me!!!