If 5x+15y=45 then 6x-18y=?
so we have 5x+15y=45simplify and undistribute 5 from both sides5(x+3y)=5(9)divide both sides by 5x+3y=9multiply both sides by 66x+18y=54if it was 6x+18y then the answer is 54if it was 6x-18y, then I don't know the answer