Solve for c
c=\frac{a+16}{4}
Solve for a
a=4\left(c-4\right)
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-4c=-16-a
Subtract a from both sides.
-4c=-a-16
The equation is in standard form.
\frac{-4c}{-4}=\frac{-a-16}{-4}
Divide both sides by -4.
c=\frac{-a-16}{-4}
Dividing by -4 undoes the multiplication by -4.
c=\frac{a}{4}+4
Divide -16-a by -4.
a=-16+4c
Add 4c to both sides.
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