Respostas

2014-03-05T11:31:42-03:00
8/x = (14/6) × (40/70) = (7/3) × (4/7) = 4/3.
8/x = 4/3.
x = 3 × 8 / 4 = 24 / 4 = 6 pedreiros
6 4 6