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3^{2}+\frac{3^{2}}{2}-18-1
To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent. Subtract 1 from 3 to get 2.
9+\frac{3^{2}}{2}-18-1
Calculate 3 to the power of 2 and get 9.
9+\frac{9}{2}-18-1
Calculate 3 to the power of 2 and get 9.
\frac{18}{2}+\frac{9}{2}-18-1
Convert 9 to fraction \frac{18}{2}.
\frac{18+9}{2}-18-1
Since \frac{18}{2} and \frac{9}{2} have the same denominator, add them by adding their numerators.
\frac{27}{2}-18-1
Add 18 and 9 to get 27.
\frac{27}{2}-\frac{36}{2}-1
Convert 18 to fraction \frac{36}{2}.
\frac{27-36}{2}-1
Since \frac{27}{2} and \frac{36}{2} have the same denominator, subtract them by subtracting their numerators.
-\frac{9}{2}-1
Subtract 36 from 27 to get -9.
-\frac{9}{2}-\frac{2}{2}
Convert 1 to fraction \frac{2}{2}.
\frac{-9-2}{2}
Since -\frac{9}{2} and \frac{2}{2} have the same denominator, subtract them by subtracting their numerators.
-\frac{11}{2}
Subtract 2 from -9 to get -11.