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Skistaddy · Answer 1 · 2016-03-02T22:06:27+0000

so we have 5x+15y=45
simplify and undistribute 5 from both sides
5(x+3y)=5(9)
divide both sides by 5
x+3y=9
multiply both sides by 6
6x+18y=54

if it was 6x+18y then the answer is 54
if it was 6x-18y, then I don't know the answer

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