Автор - Лизкачыкъ

12-(4х-18)=(36+4х)+(18-6х)

Ответ

Автор - MashaBaggins
12-(4x-18)=(36+4x)+(18-6x)
12-4x+18=36+4x+18-6x
-4x-4x+6x=36+18-12-18
-8x+6x=24
-2x=24
x=-12

Ответ

Автор - kazimierz2015
12-(4x-18)=(36+4x)+(18-6x) \ <br />
30-4x=54-2x \ <br />
30-54=4x-2x \ <br />
-24=2x \ <br />
|:2 \ <br />
underline{-12=x}

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