Question

Вычислите:
1)27+34; 2)56-49; 3) 3 18+2 56; 4)5 1112-3 718.

Answer 1

1) 2/7+3/4=8/28+21/28=29/28 = 1 1/28,
2) 5/6-4/9=15/18-8/18 = 7/18,
3) 3 1/8 + 2 5/6 = 25/8+17/6=75/24+68/24=143/24 = 5 23/24,
4) 5 11/12 - 3 7/18 = 71/12-61/18=213/36-122/36=91/36 = 2 19/36