Simplify the expression.

Question

n^2 - 2n/n^2 - 7n=?

Answer 1

(n²-2n)/(n²-7n) = ?   Notice that n can be factored out of the numerator & denominator
The problem becomes [n(n-2)]/[n(n-7)] and you can cancel the n's since they are factors (multiplying) and the final answer is (n-2)/(n-7)