Ответ №1
(3/4-5/12)x8+1/18 = 2 13/18
1) 3/4-5/12 = 4/12
2) 4/12x8/1 = 8/3 = 2 2/3
3) 2 2/3+1/18 = 49/18 = 2 13/18
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