Adding and Subtracting Unlike Fractions Section 4.5 Adding and Subtracting Unlike Fractions

Adding and Subtracting Unlike Fractions Steps Find the least common denominator (LCD) for the fractions. Write each fraction as an equivalent fraction using the LCD as the new denominator. Add or subtract the like fractions Reduce

Example Combine the fractions −5 9 + 1 3

Example Combine the fractions 7 12 − 5 18

Example Combine the fractions −3 8 − 5 48

Example Combine the fractions 5 7 + 1 8

Example Combine the fractions 𝑥 3 − 𝑥 12

Example Combine the fractions 6 5 − 3 4 + 1 2

Example Combine the fractions −2 3 − 1 7 + 5 14

Example Combine the fractions 3𝑥 8 + 2𝑥 7 − 5 14