\(\begin{array}{l}
- 3{x^2} + 5x = 0\\
\Leftrightarrow x\left( { - 3{\rm{x}} + 5} \right) = 0\\
\Leftrightarrow \left[ \begin{array}{l}
x = 0\\
- 3{\rm{x + 5 = 0}}
\end{array} \right. \Leftrightarrow \left[ \begin{array}{l}
x = 0\\
{\rm{x = }}\frac{5}{3}
\end{array} \right.
\end{array}\)
