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-\frac{xx}{x}+\frac{1}{x}
To add or subtract expressions, expand them to make their denominators the same. Multiply -x times \frac{x}{x}.
\frac{-xx+1}{x}
Since -\frac{xx}{x} and \frac{1}{x} have the same denominator, add them by adding their numerators.
\frac{-x^{2}+1}{x}
Do the multiplications in -xx+1.