(12 5/22+7 17/22)-(13 7/23-9 15/23)

Question

(12 5/22+7 17/22)-(13 7/23-9 15/23)

Answer 1

1)12 5/22+7 17/22=19 22/22=20
2)13 7/23-9 15/23=12 30/23-9 12/23=3 18/23
3)20-3 18/23=19 23/23-3 18/23=16 5/23