Question

3y – 9 – 12y    =   17 – 22y

Answer 1

3у-12у+22у=17+9
13у=26
у=26:13
у=2

Answer 2

3y – 9 – 12y = 17 – 22y
3y - 12y + 22 y = 9 + 17
13y = 26
y = 2