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