Solve for a
a=2
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a+4+2a=10
Add 2a to both sides.
3a+4=10
Combine a and 2a to get 3a.
3a=10-4
Subtract 4 from both sides.
3a=6
Subtract 4 from 10 to get 6.
a=\frac{6}{3}
Divide both sides by 3.
a=2
Divide 6 by 3 to get 2.
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