Автор - rooostik2016

(8х+3)-(10х+6)
2.8-х=8*(х+2.8

Ответ

Автор - madlyangel

1. (8х+3)-(10х+6)=8х+3-10х-6=-3-2х=-(3+2х)

2. 2,8-х=8*(х+2,8)

2,8-х=8х+22,4

-9х=19,6

х=-2,18

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