Question

Tim x biet:

                  -(-39-3x)-(-13+2x-17)=-47+29

          Jup minh nha

Answer 1

-(-39 - 3x) - (-13 + 2x - 17 ) = -47 + 29

=> 39 + 3x + 13 - 2x + 17 = -18

=> 3x - 2x = -39 - 13 - 17 - 18

=> x = -87

Answer 2

Ta có: -(-39-3x)-(-13+2x-17)=-47+29

=> 39+3x+13-2x+17=-18

=> 39+13+17+(3x-2x)= -18

=> 69 + x = -18

=> x= 69-(-18)

=> x= 87

vậy x=87