Solve for b
b=q-10
Solve for q
q=b+10
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-b=10-q
Subtract q from both sides.
\frac{-b}{-1}=\frac{10-q}{-1}
Divide both sides by -1.
b=\frac{10-q}{-1}
Dividing by -1 undoes the multiplication by -1.
b=q-10
Divide 10-q by -1.
q=10+b
Add b to both sides.
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