5*(y-1)-3*(y-2)=7-y+3

Question

5*(y-1)-3*(y-2)=7-y+3

Answer 1

5*(y-1)-3*(y-2)=7-y+3

Раскроим скобки:

5y-5-3y+6=7-y+3

2y+y=10-1

3y=9

y=3

 

Answer 2

5*(y-1)-3*(y-2)=7-y+3

5у-5-3у+6=10-у

2у+1=10-у

2у+у=10-1

3у=9

у=9:3

у=3