Question

срочно!!!!!!
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Answer 1

Ответ:          4 7/15x.

Пошаговое объяснение:

2,8x - 1 1/2x + 3 1/6x = 2.8x - 1 3/6x + 3 1/6x = 2.8x + (3 1/6x-1 3/6x) =

2.8x +(2 7/6x - 1 3/6x) = 2.8x + 1 4/6x = 28/10x + 10/6x => НОК(10;6) =30=>

84/30x +50/30x = 134/30x = 4 14/30x = 4 7/15x.