Вычислите 1)1/4+3/5 2)9/11-2/5 3)13/16-9/32

Question

Вычислите 1)1/4+3/5 2)9/11-2/5 3)13/16-9/32

Answer 1

1/4 + 3/5 = 5/20 + 12/20 = 17/20
9/11 - 2/5 = 45/55 - 22/55 = 23/55
13/16 - 9/32 = 26/32 - 9/32 = 17/32