Solve for y
y=-3
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-3y-13-8y=20
Subtract 8y from both sides.
-11y-13=20
Combine -3y and -8y to get -11y.
-11y=20+13
Add 13 to both sides.
-11y=33
Add 20 and 13 to get 33.
y=\frac{33}{-11}
Divide both sides by -11.
y=-3
Divide 33 by -11 to get -3.
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