Solve for a
a=8
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4a-36=a-12
Combine 9a and -5a to get 4a.
4a-36-a=-12
Subtract a from both sides.
3a-36=-12
Combine 4a and -a to get 3a.
3a=-12+36
Add 36 to both sides.
3a=24
Add -12 and 36 to get 24.
a=\frac{24}{3}
Divide both sides by 3.
a=8
Divide 24 by 3 to get 8.
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