Combine like terms.

$9a − 3 = 4a − 3$

Get the variable on a side by itself.

$5a=0$

$a=0$

Follow the steps in part (a).

$m=\frac{16}{17}$

Follow the steps in part (a).

Get $x$ on a side by itself and then multiply both sides by $2$.

Follow the steps in part (a).