Question

контрольные задания: << в картинке >>

Answer 1

1 5/15+2 1/15 = 3 6/15
3 7/12-1 3/12 = 2 4/12 = 2 1/4
1 11/15+2 8/15 = 3 19/15 = 4 4/15
3 7/12- 2 11/12 = 8/12 = 2/3

Answer 2

1 5/15 + 2 1/15=3 6/15
3 7/12-1 3/12=2 4/12
1 11/15+ 2 8/15=3 19/16=4 3/16
3 7/12-2 11/12=2 19/12-2 11/12=8/12