\[5x - 7 \cdot (x - 3) = 4x + 5\]
\[5x - 7x + 21 = 4x + 5\]
\[- 2x - 4x = 5 - 21\]
\[- 6x = - 16\]
\[x = \frac{16}{6} = \frac{8}{3}\]
\[\]