Вычислите: 9/12 + 11/12; 15/18 - 13/18; 51/60 - 17/60

Question

Вычислите: 9/12 + 11/12; 15/18 - 13/18; 51/60 - 17/60

Answer 1

1)20/12=5/3
2)2/18=1/9
3)36/60=3/5

Answer 2

9/12 + 11/12  => 0,75+0,92=1,67  
15/18 - 13/18 => 0.83-0.72=0.11
51/60 - 17/60 => 0.85-0.28=0.57