Use the Distributive Property:
and
So, the equation becomes
We want the collect all terms with x on the left side, so subtract cdx from both sides:
We want to collect all terms with x on the right side, so add 2ab to both sides:
Use the Distribute Property:
,
hence
Divide both sides by to obtain the solution:
The denominators must not be 0. So, we have one restriction: