Вычислите: 1) 1 -13/55 2) 6-9/20 3)10-5 12/35 4)8-4 5/22

Question

Вычислите: 1) 1 -13/55 2) 6-9/20 3)10-5 12/35 4)8-4 5/22

Answer 1

1-13/55=55/55-13/55=42/55
6-9/20=5 20/20-9/20=5 11/20
10-5 12/35=9 35/35-5 12/35=4 23/35
8-4 5/22=7 22/22-4 5/22=3 17/22.