Question

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

Ai làm nhanh mình tích 

 

Answer 1

-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

 =>   4x         = 8

          x         = 8 : 4

          x          = 2

Vậy x = 2

Answer 2

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

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

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

<=>-4x=-8

<=>x=2

vậy x=2