Solve for r
r=\frac{1-s}{2}
Solve for s
s=1-2r
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-6r+3=3s
Swap sides so that all variable terms are on the left hand side.
-6r=3s-3
Subtract 3 from both sides.
\frac{-6r}{-6}=\frac{3s-3}{-6}
Divide both sides by -6.
r=\frac{3s-3}{-6}
Dividing by -6 undoes the multiplication by -6.
r=\frac{1-s}{2}
Divide -3+3s by -6.
3s=3-6r
The equation is in standard form.
\frac{3s}{3}=\frac{3-6r}{3}
Divide both sides by 3.
s=\frac{3-6r}{3}
Dividing by 3 undoes the multiplication by 3.
s=1-2r
Divide -6r+3 by 3.
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