Solve for y
y=7
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9y-4y-4=31
Use the distributive property to multiply -4 by y+1.
5y-4=31
Combine 9y and -4y to get 5y.
5y=31+4
Add 4 to both sides.
5y=35
Add 31 and 4 to get 35.
y=\frac{35}{5}
Divide both sides by 5.
y=7
Divide 35 by 5 to get 7.
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