Question

3 12/15 - 2 6/10

скока будет?

Answer 1

1 + 12/15 - 6/10 = 1 - 12·2/15·2 - 6·3/10·3 = 1 + 24/30 - 18/30 = 1 + 24 - 18/30 = 1 6/30 = 1 1·6/5·6 = 1 1 /5 = 1.2