Solve for A
A=12000
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3A+2A+A+5000=77000
Combine A and 2A to get 3A.
5A+A+5000=77000
Combine 3A and 2A to get 5A.
6A+5000=77000
Combine 5A and A to get 6A.
6A=77000-5000
Subtract 5000 from both sides.
6A=72000
Subtract 5000 from 77000 to get 72000.
A=\frac{72000}{6}
Divide both sides by 6.
A=12000
Divide 72000 by 6 to get 12000.
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