Answer
$\text{no solution}$
Work Step by Step
$$\begin{align*}
5m&=\frac{5}{6}\left(6m-10\right)&\text{Combine like terms.}\\
5m&=\frac{5}{6}(6m)-\frac{5}{6}(10) &\text{Apply the Distributive Property.}\\
5m&=5m-\frac{25}{3} &\text{Simplify.}\\
5m-5m&=5m-\frac{25}{3}-5m &\text{Subtract $5m$ from each side.}\\
0&=-\frac{25}{3} &\text{Simplify.}\\
\end{align*}$$
The last line is a false statement. so the equation has no solution.