Ответ: y=1,05.
Пошаговое объяснение:
(y+2)/2+(7y-6)/5-(9-y)/10=1 |×10
5*(y+2)+2*(7y-6)-(9-y)=10
5y+10+14y-12-9+y=10
20y-21=0
20y=21 |÷20
y=1,05.
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Ответ: y=1,05.
Пошаговое объяснение:
(y+2)/2+(7y-6)/5-(9-y)/10=1 |×10
5*(y+2)+2*(7y-6)-(9-y)=10
5y+10+14y-12-9+y=10
20y-21=0
20y=21 |÷20
y=1,05.