Solve for y
y=-9
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72+10y=-18
Multiply 8 and 9 to get 72.
10y=-18-72
Subtract 72 from both sides.
10y=-90
Subtract 72 from -18 to get -90.
y=\frac{-90}{10}
Divide both sides by 10.
y=-9
Divide -90 by 10 to get -9.
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