Solve for y
y=9
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9y-1=80
Swap sides so that all variable terms are on the left hand side.
9y=80+1
Add 1 to both sides.
9y=81
Add 80 and 1 to get 81.
y=\frac{81}{9}
Divide both sides by 9.
y=9
Divide 81 by 9 to get 9.
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