### Home > INT3 > Chapter 12 > Lesson 12.1.1 > Problem 12-9

12-9.

Some of the following algebraic fractions have common denominators and some do not. Add or subtract the expressions and, if possible, simplify.

See part (a).

Try factoring after subtracting.

Factor to find the common denominator, then use the strategy from part (a) to simplify.

If your answer was

check the step where you subtracted.