Solve for s
s=\frac{S+6}{12}
Solve for S
S=12s-6
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12s-6=S
Swap sides so that all variable terms are on the left hand side.
12s=S+6
Add 6 to both sides.
\frac{12s}{12}=\frac{S+6}{12}
Divide both sides by 12.
s=\frac{S+6}{12}
Dividing by 12 undoes the multiplication by 12.
s=\frac{S}{12}+\frac{1}{2}
Divide S+6 by 12.
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