Solve for z
z=\frac{x-10}{4}
Solve for x
x=4z+10
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-4z=10-x
Subtract x from both sides.
\frac{-4z}{-4}=\frac{10-x}{-4}
Divide both sides by -4.
z=\frac{10-x}{-4}
Dividing by -4 undoes the multiplication by -4.
z=\frac{x}{4}-\frac{5}{2}
Divide 10-x by -4.
x=10+4z
Add 4z to both sides.
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Limits
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