Question

найти значение выражения (1 целая 2/3+5/6) * (1-2/5)

Answer 1

(1 2/3 + 5/6) * (1 - 2/5) = (10/6 + 5/6) * 3/5 = 15/6 * 3/5 = 5/2 * 3/5 [сокращаем 5 и 5] = 3/2

Answer 2

1) 1 23 + 56 = 1 46 + 56 = 2 36 = 2 12

2) 1 - 25 = 55 -25 = 35

3) 2 12 * 35 = 1 12