Formula
(ax + b)/(cx + d), cancel common factors
To simplify, divide numerator and denominator by the greatest common factor.
Example
(2x + 4)/(x + 2) = 2, with x ≠ −2.
FAQs
What are excluded values?
They are values that make the denominator zero, so the original fraction is undefined.
Why simplify first?
It makes expressions easier to solve, compare, and graph.