Вычислите 5 3/7 :2 3/8 +18/35 :3/7

Question

Вычислите 5 3/7 :2 3/8 +18/35 :3/7

Answer 1

5 3/7÷2 3/8 +18/35÷3/7= 3 17/35
1)5 3/7  ÷  2 3/8 = 38/7  ÷  19/8 = 38/7  ×  8/19 = 304/133= 16/7 = 2 2/7
2)18/35  ÷  3/7 = 18/35  ×  7/3 = 126/105= 6/5 = 1 1/5
3)2 2/7 + 1 1/5 = 16/7  +  6/5 =(16 × 5  +  6 × 7)/35 = 80/35  +  42/35 =  122/35 = 3 17/35