Solve for y
y=\frac{3}{8}=0.375
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9y+7-y=10
Subtract y from both sides.
8y+7=10
Combine 9y and -y to get 8y.
8y=10-7
Subtract 7 from both sides.
8y=3
Subtract 7 from 10 to get 3.
y=\frac{3}{8}
Divide both sides by 8.
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