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$\begingroup$ removed - unclear question....
$\endgroup$ 5 1 Answer
$\begingroup$ $$\frac{3}{5}\cdot\frac{\sqrt{3}}{2}=\frac{3}{10}\cdot\sqrt{3}\Longleftrightarrow$$
$$\frac{3\cdot\sqrt{3}}{5\cdot2}=\frac{3}{10}\cdot\sqrt{3}\Longleftrightarrow$$
$$\frac{3\cdot\sqrt{3}}{10}=\frac{3}{10}\cdot\sqrt{3}\Longleftrightarrow$$
$$\frac{3\cdot\sqrt{3}}{10}=\frac{3\cdot\sqrt{3}}{10}$$
Because $2\cdot5=10$.
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