Solve for x
x=\frac{z-20}{2}
Solve for z
z=2\left(x+10\right)
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2x=z-20
The equation is in standard form.
\frac{2x}{2}=\frac{z-20}{2}
Divide both sides by 2.
x=\frac{z-20}{2}
Dividing by 2 undoes the multiplication by 2.
x=\frac{z}{2}-10
Divide z-20 by 2.
z-20=2x
Swap sides so that all variable terms are on the left hand side.
z=2x+20
Add 20 to both sides.
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