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

1-17.

Simplify each expression.

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.

Multiply the denominators.

These two answers are the new numerator and denominator.

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