Автор - aigerim905

пжл помогитееее людииии

Ответ

Автор - JuliaKovalchook
x·81+67=553
81x=553-67
81x=486
x=486:81
х=6

489+с·5=9614
5с=9614-489
5с=9125
с=9125:5
с=1825




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