Solve for a
a=20
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4a-8=3\left(a+4\right)
Use the distributive property to multiply 4 by a-2.
4a-8=3a+12
Use the distributive property to multiply 3 by a+4.
4a-8-3a=12
Subtract 3a from both sides.
a-8=12
Combine 4a and -3a to get a.
a=12+8
Add 8 to both sides.
a=20
Add 12 and 8 to get 20.
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