Solve for y
y=9
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-18=-3y+9
Combine 7y and -10y to get -3y.
-3y+9=-18
Swap sides so that all variable terms are on the left hand side.
-3y=-18-9
Subtract 9 from both sides.
-3y=-27
Subtract 9 from -18 to get -27.
y=\frac{-27}{-3}
Divide both sides by -3.
y=9
Divide -27 by -3 to get 9.
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