Question

Efetue:
5/3 - 2/15 =
3/17 + 5/3 =
1/5 - 1/19 =
7/12 - 3/165 =

Answer 1

Resposta:

-> 5/3 - 2/15 = 25/15 - 2/15 => 23/15

-> 3/17 + 5/3 = 9/51 + 85/51 => 94/51

-> 1/5 - 1/19 = 19/95 - 5/95 => 14/95

-> 7/12 - 3/165 = 7/12 - 1/55 => 385/660 - 12/660 => 373/660