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
\(-2x-\left(x-17\right)=34-\left(-x+25\right)\)
\(-2x-x+17=34+x-25\)
\(-2x-x-x=34-17-25\)
\(-4x=-8\)
\(x=2\)