I saw this question on a test and i cant seem to figure it out or find the answer. Would appreciate any help. Thanks guys
ab-c=cb and a is not equal to b then b=
Have you considered solving for b?
ab - cb = c
(a-c)b = c
It looks more important for \(\displaystyle a\ne c\) rather than \(\displaystyle a\ne b\)
Bring all the terms with 'b' on the left hand side of the equation and all the terms "without b" to the right-hand-side of the equation.
See if you can "factor-out" b.