Автор - Mmlad93921

12,98-(3,8a+1,3x)=11,23

Ответ

Автор - Зайка280704
12,98-11,23
3,8-1,3х=1,75
х=3,8-1,3
х=2,5
х=2,5-1,3
х=1,2
12,98-(3,8*1,2-1,3*1,2)=11,23

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