Question 100877
{{{a(x-b)=c+ab}}}
first distribute a across (x-b)
{{{ax-ab=c+ab}}}
now move -ab to the other side by adding it to both sides
{{{ax-ab+ab=c+ab+ab}}}
-ab+ab on the left side cancel out and ab+ab on the right side combine to get 2ab
{{{ax=c+2ab}}}
divide both sides by a
{{{ax/a=(c+2ab)/a}}}
{{{x=(c+2ab)/a}}}