Solve for a
a = \frac{9}{2} = 4\frac{1}{2} = 4.5
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13a-5-11a=4
Subtract 11a from both sides.
2a-5=4
Combine 13a and -11a to get 2a.
2a=4+5
Add 5 to both sides.
2a=9
Add 4 and 5 to get 9.
a=\frac{9}{2}
Divide both sides by 2.
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