Question

Помогите решить примеры

Answer 1

(12+13)*2 = (36+26)*2 = 56*2 = 106 = 53 = 1 23
(12-13)*3 = (36-26)*3 = 16*3 = 12

Answer 2

д) (1/2 + 1/3) * 2 = (3/6 + 2/3) * 2 = 5/6 *2 = 5/3 = 1 2/3
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е) (1/2 - 1/3) *3 = (3/6 - 2/6) * 3 = 1/6 * 3 = 1/2
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д)(1/4 + 1/6) : 10 = (3/12 + 2/12) : 10 = 5/12 : 10 = 1/24