Question

Tìm `x`: `-2x-(x-17)=34-(-x+25)`

Answer 1

 `-2x - (x - 17) = 34 - (-x + 25)`

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

`<=> -3x + 17 = 9 + x`

`<=> 17 - 9 = x + 3x`

`=> x = 8 : 4 `

`=> x = 2`

Answer 2

\(-2x-x+17=34+x-25\\ \Rightarrow-3x+17=9+x\\ \Rightarrow-3x-x+17-9=0\\ -4x+8=0\\ \Rightarrow-4x=-8\\ \Rightarrow x=2\)