Question

e nessa alguém2x+7=x-1​

Answer 1

Resposta:

2x-7=|x|+1

|x|=2x-7-1

|x| = 2x - 8

Dai:

a) x = 2x - 8

    x = 8

b)  x = -2x + 8

    -3x = -8

      x = 3/8

Answer 2

2x+7= x-1

2x-x= -1-7

1x= -8

x= -8/ 1

x= -8