Question 54153
Multiply both sides by 15 and we get {{{15-10y=27-3y+9}}}, which simplifies to {{{15-10y=36-3y}}}.  Adding 10y to both sides yields {{{15=36+7y}}}.  Subtracting 36 from both sides and get {{{-21=7y}}}.  Finally divide both sides by 7 to get {{{y=-3}}}.