Solve for x
x=-\frac{z}{2}+60
Solve for z
z=120-2x
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2x+z=120
Swap sides so that all variable terms are on the left hand side.
2x=120-z
Subtract z from both sides.
\frac{2x}{2}=\frac{120-z}{2}
Divide both sides by 2.
x=\frac{120-z}{2}
Dividing by 2 undoes the multiplication by 2.
x=-\frac{z}{2}+60
Divide 120-z by 2.
2x+z=120
Swap sides so that all variable terms are on the left hand side.
z=120-2x
Subtract 2x from both sides.
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