Solve for y
y=9
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2y-27+y=0
Add y to both sides.
3y-27=0
Combine 2y and y to get 3y.
3y=27
Add 27 to both sides. Anything plus zero gives itself.
y=\frac{27}{3}
Divide both sides by 3.
y=9
Divide 27 by 3 to get 9.
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