Уровнение:0.3(6-3у)=4.5-0.8(у-9)

Question

Уровнение:0.3(6-3у)=4.5-0.8(у-9)

Answer 1

0.3*(6-3у)=4.5-0.8*(у-9)

1.8-0.9у=4.5-0.8у+7.2

-0.9у+0.8у=4.5+7.2-1.8

-0.1у=9.9

у=9.9:(-0.1)

у=-99

ОТВЕТ:-99

Answer 2

1.8-0.9y=4.5-0.8y+7.2

-0.9y+0.8y=4.5+7.2-1.8

-0.1y=9.9

y= -99