Question

determine x sabendo que A//B//C

Answer 1

2 x - 2 / 3 x + 1 = 4/7
multiplica em cruz
7(2 x - 2) = 4 (3 x + 1)
14 x - 14 = 12 x + 4
14 x - 12 x = 4 + 14
2 x = 18
x = 18/2
x = 9