This week in precalc we learned how to add/subtract/multiply/divide rational expressions.

When working with rational expressions, we need to cancel out whats equivalent. To do so we need to figure out our non-permissible values. *Non-permissible values: values that cause the fraction to have a denominator with a value of zero. (In math, you can’t divide by zero)* Then we simplify the numerators and denominators, and finally when everything is simplified then we cancel out identical pairs of numerators and denominators.

A website that helped me understand this topic http://www.montereyinstitute.org/courses/Algebra1/COURSE_TEXT_RESOURCE/U11_L1_T2_text_final.html