Предмет: Математика, автор: Аноним

0,8 * (5-Х) - 1,2 * (х-4) = -2,8
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Автор ответа: maxreveur

0

Раскрываем скобки
4-0,8х-1,2х+4,8=-2,8
-2х+8,8=-2,8
-2х=-11,6
х=5,8

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