Solve for a
a = \frac{7}{2} = 3\frac{1}{2} = 3.5
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2a+3=10
Swap sides so that all variable terms are on the left hand side.
2a=10-3
Subtract 3 from both sides.
2a=7
Subtract 3 from 10 to get 7.
a=\frac{7}{2}
Divide both sides by 2.
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