Question

[phamquangphuc]

17-2[x]=11

[x] la gia tri tuyet doi

4[x]-25=(-9)

[x] la gia rei tuyet doi

Answer 1

[girls generation]

 17 - 2 [ x ] = 11

        2 [ x ] = 17 - 11

        2 [ x ] = 6

           [ x ] = 6 : 2

           [ x ] = 3

         x = 3 hoặc x = -3