Question

Solve equation for a

Answer 1

`(3ax-n)/(5)=-4\qquad\text{multiply both sides by 5}\\\\3ax-n=-20\qquad\text{add n to both sides}\\\\3ax=n-20\qquad\text{divide both sides by 3a}\\eq0\\\\\boxed{x=(n-20)/(3a)}`