Solve for x
x = \frac{39}{2} = 19\frac{1}{2} = 19.5
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x=20-\frac{1}{2}
Subtract \frac{1}{2} from both sides.
x=\frac{40}{2}-\frac{1}{2}
Convert 20 to fraction \frac{40}{2}.
x=\frac{40-1}{2}
Since \frac{40}{2} and \frac{1}{2} have the same denominator, subtract them by subtracting their numerators.
x=\frac{39}{2}
Subtract 1 from 40 to get 39.
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