Solve for y
y=4
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2y+1+y=13
Add y to both sides.
3y+1=13
Combine 2y and y to get 3y.
3y=13-1
Subtract 1 from both sides.
3y=12
Subtract 1 from 13 to get 12.
y=\frac{12}{3}
Divide both sides by 3.
y=4
Divide 12 by 3 to get 4.
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