FGFGG

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 \(x=\frac{6}{31}\)

a) -2x - (x-17) = 34-(-x + 25)

-2x- x+17= 34+x-25

-2x-x-x= -17 +34-25

-4x = -8

x = 2

b)17x-(-16x-27) = 2x+43

17x + 16x + 27 = 2x + 43

17x + 16x -2x= -27 +43

31x= 26

x= 21/31

c)- 2x- 3(x-17) = 34- 2(-x + 25)

-2x - 3x + 51 = 34 + 2x -50

-2x - 3x -2x = -51 + 34 -50

-7x = -67

x = 67/7

d) 17x +3(-16x-37) = 2x+ 43 -4x

17x -48x -111 = 2x + 43 -4x

17x - 48x -2x + 4x = 111 -43

-29x = 68

x = -68/29

không ai làm nhỉ

\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)

\(-2x-x+17=34+x-25\)

\(-2x-x-x=34-25-17\)

\(-4x=-8\Leftrightarrow x=2\)

\(17x-\left(16x-37\right)=2x+43\)

\(17x-16x+37=2x+43\)

\(17x-16x-2x=-37+43\)

\(-x=6\Leftrightarrow x=6\)

\(-2x-3\left(x+17\right)=34-2\left(-x+25\right)\)

\(-2x-3x-51=34+2x-50\)

\(-2x-3x-2x=34-50+51\)

\(-7x=35\Leftrightarrow x=-5\)

a) -2x-x+17=34+x-25

<=> -2x-x-x=34-25-17

<=> -4x=-8

<=> x=2

b)17x+16x+37=2x+43

<=> 33x-2x=43-37

<=> 31x=6

<=>x=\(\frac{6}{31}\)

c) -2x-3x+51=34+2x-50

<=>-5x-2x=34-50-51

<=>-7x=-67

<=>x=\(\frac{67}{7}\)

d) [-2.(4x²-4x+1)- 1]=-106

<=> -8x²+8x-2-1=-106

<=>-8x²+8x=-103

nhớ ghi cách làm ra nha !

-2x-(x-17)=34-(-x+25)

-2x - x + 17 = 34 + x - 25

-3x + 17 = (34 - 25) + x

-3x + 17 = 9 + x

-3x - x = 9 - 17

-4x = -8

x = -8 : (-4)

x = 2

vậy........

nguyen phuong uyên oi cho hoi ban ay -3x o dau

-2x - x 

= -2x + (-x)

= - (2x + x)

= -3x 

TRUONG MY DUNG hiểu chưa bn !?!

\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)

\(-2x-x+17=34+x-25\)

\(-2x+17=34-25\)

\(-2x+17=9\)

\(-2x=9-17\)

\(-2x=-8\)

\(x=-8:\left(-2\right)\)

\(x=4\)

\(\Leftrightarrow-2x-x+17=34+x-25\)

\(\Leftrightarrow-2x-x-x=34-25-17\)

\(\Leftrightarrow-4x=-8\)

\(\Leftrightarrow x=2\)

\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)

\(-2x-x+17=34+x-25\)

\(-2x+17=34-25\)

\(-2x+17=9\)

\(-2x=9-17\)

\(-2x=-8\)

\(x=-8:\left(-2\right)\)

\(x=4\)

\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)

\(\Rightarrow-2x-x+17=34+x-25\)

\(\Rightarrow17-34+25=x+2x+x\)

\(\Rightarrow8=4x\)

\(\Rightarrow8:4=x\)

\(\Rightarrow2=x\)

Vậy x=2

a,-2x -(x-17)=34-(-x+25)

-2x-x+17=34+x-25

-3x+17=9+x

-3x-x=9-17

-4x=-8

-->4x=8

x=8:4

x=2

Vậy x=2

b,17-(16x-37)=2x+43

17-16x+37=2x+43

20-16x=2x+43

-16x-2x=43-20

-18x=23

x=23:(-18)

x=23/-18

Mà x là số nguyên nên --> x thuộc tập rỗng

c,-2x-3.(x-17)=34-2(-x+25)

-2x-3x+51=34-2.(-x)-25

-5x+51=9-(-2).x

-5x+(-2).x=9-51

-7x=-42

7x=42

x=42:7

x=6

Vậy x=6