Solve for y
y=-2
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15+y+\frac{15}{3}=18
Multiply 15 and \frac{1}{3} to get \frac{15}{3}.
15+y+5=18
Divide 15 by 3 to get 5.
20+y=18
Add 15 and 5 to get 20.
y=18-20
Subtract 20 from both sides.
y=-2
Subtract 20 from 18 to get -2.
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