Вычислите сумму 1. 5 целых + 7 целых 3/8 + 3 1/8 2.4 2/5 + 6 + 1 целых 1/5 3. 1 целых 5/12 + 2 целых 3 /12 + 3 целых 2/3


4. 4 целых 2/ 15 + 7 / 15 + 6

695.

1) 5 + 7 3/8 + 3 1/8 = 5 + 59/8 + 25/8 = 40 + 59 + 25/8 = 124/8 = 31/2 = 15,5

2) 4 2/5 + 6 + 1 1/5 = 22/5 + 6 + 6/5 = 22 + 30 + 6/5 = 58/5 = 11,6

3) 1 5/12 + 2 3/12 + 3 2/3 = 17/12 + 27/12 + 11/3 = 17 + 27 + 44/12 = 88/12 = 22/3 = 7,3

4) 4 2/15 + 7/15 + 6 = 62/15 + 7/15 + 6 = 62 + 7 + 90/15 = 159/15 = 53/5 = 10,6