вычислите: 1) 1 -13/55 2) 6-9/20 3)10-5 12/35 4)8-4 5/22
дам 50 баллов

1-13/55=55/55-13/55=42/55
6-9/20=120/20-6/20=114/20=57/10=5 7/10
10-5 12/35=350/35-187/35=163/35=4 23/35
8-4 5/22=176/22-93/22=83/22=3 17/22

1)1-13/55= 55/55-13/55=42/55
2)6-9/20= 5 20/20-9/20 =5 11/20
3)10-5 12/35=9 35/35 - 5 12/35 = 4 23/35
4)8-4 5/22=7 22/22-4 5/22 = 3 17/22