12 Chapter 1 The Set of Real Numbers Dividing Fractions Example 6 Divide the fractions. a. b. Solution: a. Multiply by the reciprocal of , which is 2 Divide out the common factors and multiply. 1 b. Write the whole number 6 as Multiply by the reciprocal of , which is 2 Divide out the common factors and multiply. 12 1 13 6 1 2 13 Skill Practice Divide. 12 25 8 15 9. 10. 1 4 2 6. Adding and Subtracting Fractions 16. 61 12 13 1 6 61 . 12 13 6 12 13 6 1 8 10 5 3 16 3 10 3 . 3 10 8 5 3 10 8 5 10 3 12 13 6 8 5 3 10 Adding and Subtracting Fractions Two fractions can be added or subtracted if they have a common denominator. Let a, b, and c be numbers such that b does not equal zero.Then, and a b c b a c b a b c b a c b To add or subtract fractions with the same denominator, add or subtract the numerators and write the result over the common denominator. Answers 9. 10. 1 8 9 10 Adding and Subtracting Fractions with the Same Denominator Example 7 Add or subtract as indicated. a. b. 13 5 3 5 1 12 7 12 Avoiding Mistakes Always check that the final answer is in lowest terms.
miller_beginning_intermediate_algebra_4e_ch1_3
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