Автор - veronikakot2015

10y+2·(7y-2)=5·(4y+3)+3y

12x-7·(x+4)=26-4x

Ответ

Автор - radyaknikita
10у+14у-4=20у+15+3у
24у-23у=19
у=19

12х-7х-28=26-4х
9х=56
х=7

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