Question 93939
Try this:
{{{ax-2 = bx+5}}} Subtract bx from both sides.
{{{ax-bx-2 = 5}}} Now add 2 to both sides.
{{{ax-bx = 7}}} Factor an x from the lefthand side.
{{{x(a-b) = 7}}}  Finally, divide both sides by (a-b)
{{{x = 7/(a-b)}}}...and you're done!