Evaluate
-\frac{1}{11}+\frac{1}{q}
Factor
-\frac{\frac{1}{11}\left(q-11\right)}{q}
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\frac{11}{11q}-\frac{q}{11q}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of q and 11 is 11q. Multiply \frac{1}{q} times \frac{11}{11}. Multiply \frac{1}{11} times \frac{q}{q}.
\frac{11-q}{11q}
Since \frac{11}{11q} and \frac{q}{11q} have the same denominator, subtract them by subtracting their numerators.
Examples
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Matrix
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Simultaneous equation
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Differentiation
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Integration
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Limits
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