### Home > CCA > Chapter 1 > Lesson 1.1.2 > Problem 1-17

1-17.

Simplify each expression. Homework Help ✎

Find a common denominator for both fractions. Remember that adding a negative is the same as subtracting

Refer to part (a). Just remember that you are adding two negatives.

Multiply the numerators.

(9)(−2) = −18Multiply the denominators.

(10)(3) = 30These two answers are the new numerator and denominator.

Flip the second term and multiply. Refer to part (c).