Evaluate
\frac{\pi }{3}+\frac{\pi }{k}
Factor
\frac{\pi \left(k+3\right)}{3k}
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\frac{\pi k}{3k}+\frac{3\pi }{3k}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 3 and k is 3k. Multiply \frac{\pi }{3} times \frac{k}{k}. Multiply \frac{\pi }{k} times \frac{3}{3}.
\frac{\pi k+3\pi }{3k}
Since \frac{\pi k}{3k} and \frac{3\pi }{3k} have the same denominator, add them by adding their numerators.
Examples
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Simultaneous equation
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Limits
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