Solve:$2 (5\mathrm{x} – 3) – 3 (2\mathrm{x} – 1) = 9$

Given: $2 (5x – 3) – 3 (2x – 1) = 9$

Simplifying the brackets, we get:

$$\begin{gathered} => 2 \times 5x – 2 \times 3 – 3 \times 2x + 3 \times 1 = 9 \\ => 10x – 6 – 6x + 3 = 9 \\ => 10x – 6x – 6 + 3 = 9 \\ => 4x – 3 = 9 \\ => 4x = 12 \\ => x = 3. \end{gathered}$$