Evaluate
\frac{2\sqrt{5}}{15}\approx 0.298142397
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\frac{2}{3}\sqrt{5}-\frac{\sqrt{5}}{5}-\frac{\sqrt{5}}{3}
Combine \frac{\sqrt{5}}{6} and \frac{\sqrt{5}}{2} to get \frac{2}{3}\sqrt{5}.
\frac{7}{15}\sqrt{5}-\frac{\sqrt{5}}{3}
Combine \frac{2}{3}\sqrt{5} and -\frac{\sqrt{5}}{5} to get \frac{7}{15}\sqrt{5}.
\frac{2}{15}\sqrt{5}
Combine \frac{7}{15}\sqrt{5} and -\frac{\sqrt{5}}{3} to get \frac{2}{15}\sqrt{5}.
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