### Home > CCAA > Chapter 8 Unit 7 > Lesson CC2: 8.1.1 > Problem 8-9

8-9.

Simplify each expression.

Find a common denominator and simplify.

Remember that adding a negative number is essentially subtraction.

Multiply the numerators together and the denominators together.

Turning the first fraction into a fraction greater than one may prove to be more helpful.