Question

Найдите значение выражения (3 3/5-2 1/15)*5

Answer 1

(3 3/5 - 2 1/15) * 5 = 7 2/3,
1) 3 3/5 - 2 1/15 = 18/5 - 31/15 = 54/15 - 31/15 = 23/15,
2) 23/15 * 5 = 23/3 = 7 2/3