Предмет: Математика, автор: matroluxewest

1.9-0.5(7-3у)=0.4(4у-6)

Ответы

Автор ответа: Аноним

1,9-0,5(7-3y)=0,4(4y-6)

1,9-3,5+1,5y=1,6y-2,4

-1,6y+1,5y=-1,9+3,5-2,4

-0,1y=1,9-2,4

-0,1y=-0,5

y=-0,5/(-0,1)

y=-5/(-1)

Ответ: y=5

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