Question

E essa?
10 (x/10 - 1) = x - 3 (2x/3 = 4)
o meu resultado deu x = 136/15

Answer 1

10 (x/10 - 1) = x - 3 (2x/3 + 4)

10x/10 -10 = x -6x/3 -12

x - 10 = x - 2x - 12

2x = -12 + 10

2x = -2

x = -1