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a)-2x - 3.(x - 17) = 34 - (-x + 25)
- 2x - 3x + 51 = 34 + x - 25
- 2x - 3x - x = -51 + 34 - 25
- 6x = - 42
x = 7
Vậy x = 7
b)-2x-3.(x-17)=34-2(-x+25)
- 2x - 3x + 51 = 34 + 2x - 50
- 2x - 3x - 2x = - 51 + 34 - 50
7x = - 67
x = \(-\frac{67}{7}\)
Vậy \(x=-\frac{67}{7}\)
c)17x-(-16x-37)=2x +43
17x + 16x + 37 = 2x + 43
17x + 16x - 2x = -37 + 43
31x = 6
x = \(\frac{6}{31}\)
Vậy \(x=\frac{6}{31}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
-2x-(x-17)=34-(-x+25)
-2x-x+17=34+x-25
-2x-x-x=34-25-17
-4x=-8
x=-8:(-4)
x=2
Vậy x=2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)
\(-2x-x+17=34+x-25\)
\(-2x-x-x=34-25-17\)
\(-4x=-8\Leftrightarrow x=2\)
\(17x-\left(16x-37\right)=2x+43\)
\(17x-16x+37=2x+43\)
\(17x-16x-2x=-37+43\)
\(-x=6\Leftrightarrow x=6\)
\(-2x-3\left(x+17\right)=34-2\left(-x+25\right)\)
\(-2x-3x-51=34+2x-50\)
\(-2x-3x-2x=34-50+51\)
\(-7x=35\Leftrightarrow x=-5\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
-2x - (x - 17) = 34 - (-x + 25)
-2x - x + 17 = 34 + x - 25
-2x - x - x = 34 - 25 - 17
-4x = -8
x = (-4) : (-8)
x = 2
-2 - ( x - 17 ) = 34 - ( -x + 25 )
-2x - x + 17 = 34 + x - 25
-2x - x - x = -17 + 34 - 25
-4x = -8
x = 2
![](https://rs.olm.vn/images/avt/0.png?1311)
2x - 3( x-17) = 34 - 2. ( -x + 25)
<=> 2x - 3x + 51 = 34 -50 + 2x
<=> 51 - 3x = 34 - 50 = - 16
<=> 3x = 67
<=> x = 67/3
![](https://rs.olm.vn/images/avt/0.png?1311)
-2x-3.(x-17)=34-2(-x+25)
-2x-3x-51=34+2x-25
-2x-3x-2x=34-25+51
-7x=60
x=60/-7
![](https://rs.olm.vn/images/avt/0.png?1311)
Trả lời:
-2x - (x - 17) = 34 - (-x + 25)
-2x - x + 17 = 34 + x - 25
-3x + 17 = 9 + x
-3x - x = 9 - 17
-4x = -8
x = 2
Vậy x = 2
Hok tốt!
Vuong Dong Yet
\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)
\(-2x-x+17=34+x-25\)
\(-2x-x-x=34-17-25\)
\(-4x=-8\)
\(x=2\)
x=-8+1 phần 2