Section 1.4 Addition of Real Numbers 49 Answers 9. 9.2 10. 1 2 b. The least common denominator is 15. Write each fraction with the LCD. Find the absolute value of the addends. The absolute value of is greater than the absolute value of .Therefore, the sum is negative. Next, subtract the smaller absolute value from the larger absolute value. a 12 15 2 15 Apply the sign of the number with the larger absolute value. Subtract. Simplify to lowest terms. 10 15 2 3 Skill Practice Add. 9. 10. 9 10 2 5 27.3 118.12 b 2 15 12 15 ` 2 15 ` 2 15 and ` 12 15 ` 12 15 . 2 15 a 12 15 b 2 15 a 4 3 5 3 b 2 15 a 4 5 b 3. Translations Translating Expressions Involving the Addition of Real Numbers Write each English phrase as an algebraic expression.Then simplify the result. a. The sum of 12, 8, 9, and 1 b. Negative three-tenths added to c. The sum of 12 and its opposite Solution: a. The sum of 12,8, 9, and 1 12 182 9 112 20 9 112 11 112 b. Negative three-tenths added to The common denominator is 40. 47 40 35 40 a 12 40 b 7 8 a 3 10 b 78 12 78 Example 5 ⎧⎪⎪⎪⎨⎪⎪⎪⎩ ⎧⎪⎪⎨⎪⎪⎩ ⎧⎪⎪⎪⎨⎪⎪⎪⎩ Apply the order of operations by adding from left to right. The numbers have the same signs.Add their absolute values and keep the common sign.Q35 40 12 40R
miller_beginning_intermediate_algebra_4e_ch1_3
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