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12 - 2(4 - 3x) = -4
2(4 - 3x) =-4+12
2(4 - 3x) = 8
4 - 3x = 8 : 2
4 - 3x = 4
3x = 4 - 4
3x = 0
x = 0 : 3
x = 0
Vậy x = 0
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Mk cảm ơn
\(2\left(x-1\right)+3\left(3x-2\right)=x-4\)
\(2x-2+9x-6=x-4\)
\(2x+9x-x-2-6=-4\)
\(10x-2-6=-4\)
\(10x-2=2\)
\(10x=4\)
\(x=\frac{2}{5}\)
Vậy \(x=\frac{2}{5}\)
\(3\left(4-x\right)-2\left(x-1\right)=x+20\)
\(12-3x-2x+2=x+20\)
\(12-5x+2=x+20\)
\(12-5x-x+2=20\)
\(12-6x+2=20\)
\(12-6x=18\)
\(6x=-6\)
\(x=-1\)
Vậy \(x=-1.\)
\(4\left(2x+7\right)-3\left(3x-2\right)=24\)
\(8x+28-9x+6=24\)
\(8x-9x+28+6=24\)
\(-x+34=24\)
\(-x=-10\)
\(x=10\)
Vậy \(x=10\)
\(3\left(x-2\right)+2x=10\)
\(3x-6+2x=10\)
\(3x+2x-6=10\)
\(5x=16\)
\(x=\frac{16}{5}\)
Vậy \(x=\frac{16}{5}\)
2(x-1)+3(3x-2)=x-4
=>2x-2=9x-6-x+4=0
=>10x-4=0
=>x=\(\frac{2}{5}\)
a) 4(2x+7)-3(3x-2)=24
8x+28-9x-6=24
(8x-9x)+(28-6)=24
(-1)x+22=24
(-1)x=24-22=2
x=2:(-1)=-2
b) -2(x+3)+(-4)2=3(1-x)
(-2)x+(-6)+16=3-3x
(-2)x+(-6)+16+3x=3
[(-2)x+3x]+[(-6)+16]=3
x+10=3
x=3-10=-7
a)
4 . ( 2x + 7 ) - 3 . ( 3x - 2 ) = 24
8x + 28 - 9x + 6 = 24
34 - x = 24
x = 10
b)
3 ( x - 2 ) + 2x = 10
3x - 6 + 2x = 10
5x - 6 = 10
5x = 16
x = 16/5
a) 4 . ( 2x + 7 ) - 3 . ( 3x - 2 ) = 24
\(8x+28-9x+6=24\)
\(8x-9x=24-6-28\)
\(-x=-10\)
\(x=10\)
b) 3 ( x - 2 ) + 2x = 10
\(3x-6+2x=10\)
\(3x+2x=10+6\)
\(5x=16\)
\(x=\frac{16}{5}\)
học tốt !!!
\(4\left(2x+7\right)-3\left(3x-2\right)=24\)
\(8x+28-9x+6=24\)
\(-x+34=24\)
\(-x=-10\)
\(x=10\)
4.(2x+7)-3.(3x-2)=24
4.2x+4.7-3.3x-3.2=24
8x+28-9x+6=24
8x-9x=24-28-6=-10
\(\Rightarrow\)(-1)x=-10
x=-10:(-1)
x=10
Vậy x=10
10-2(4-3x)=-4
<=>10-8+6x=-4
<=>2+6x=-4
<=>6x=-6
<=>x=-1
Vậy x=-1
3 -12+3(-x+7)=-18
<=> 3-12-3x+21=-18
<=>12-3x=-18
<=>3x=30
<=>x=10
Vậy x=10
\(10-2\left(4-3x\right)=4\Leftrightarrow10-\left(8-6x\right)=4\)
\(\Leftrightarrow8-6x=10-4=6\Leftrightarrow6x=8-6=2\Leftrightarrow x=\frac{2}{6}=\frac{1}{3}\)
\(3-12+3\left[\left(-x\right)+7\right]=-18\Leftrightarrow\left(-9\right)+\left(-3x\right)+21=18\)
\(\Leftrightarrow\left(-3x\right)+12=18\Leftrightarrow-3x=18-12=6\Leftrightarrow x=6\div\left(-3\right)=-2\)
\(4.24\div\left(3x-2\right)=-3\Leftrightarrow96\div\left(3x-2\right)=-3\Leftrightarrow3x-2=96\div\left(-3\right)=-32\)
\(\Leftrightarrow3x=\left(-32\right)+2=-30\Leftrightarrow x=\left(-30\right)\div3=-10\)
4(2x+7)-3(3x-2)=24
4.2x+4.7-3.3x+3.2=24
8x+28-9x+6=24
8x-9x=24-28-6=-10
=>(-1)x=-10
x=-10:(-1)
x=10
cứ tin mình,mình học loại này rồi
-12 + 3(-x + 7 ) = -18
3(-x + 7 ) = (-18 ) - (-12)
3(-x + 7 ) = -6
-x + 7 = (-6) : 3
- x + 7 = 2
-x = 2-7
-x = -5
vậy x = 5
24 : ( 3x - 2 ) = -3
3x - 2 = 24 : (-3)
3x - 2 = -8
3x = -8 + 2
3x = -6
x = (-6) : 3
x = -2
vậy x = -2
-45 : 5(-3 - 2x ) = 3
5( -3 - 2x ) = (-45) : 3
5( -3 - 2x ) = -15
-3 - 2x = (-15) : 5
-3 - 2x = (-3)
2x = (-3) : (3)
2x = 0
x = 2 : 0
x = 0
vậy x = 0
4.2x+4.7-3.3x+3.2=24
8x+28-9x+6=24
(8x-9x)+(28+6)=24
-1x+34=24
-1x=24-34
-1x=10
x=10:(-1)
x=-10
Vậy x = -10
24 : ( 3x -2 ) = -3
( 3x - 2 ) = 24 : -3
( 3x -2 ) = -8
3x = -8 + 2
3x = -6
x = -6 : 3
x = -2
Kb nhé ♥♥♥
Ta có: 24: (3x-2)= -3
=> 3x- 2= 24: (-3)
=> 3x- 2= -8
=> 3x= 8+ 2= 10
=> x=10/3