Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 6 - Algebra: Equations and Inequalities - 6.1 Algebraic Expressions and Formulas - Exercise Set 6.1: 62

Answer

-13x+8

Work Step by Step

7x - 4[6 - (8 - 5x)] Step 1: Drop parentheses and change the sign of each term in parentheses: −(8-5x) = -8 +5x 7x -4[ 6- 8 +5x] Step 2 Simplify inside brackets: 6-8 = -2 7x - 4[-2+5x] Step 3 Apply the distributive property: 7x - 4.-2 -4.5x Step 4: Multiply 7x +8-20x Step 5: Group like terms (7x-20x) +8 Step 6: Combine the like terms (7x-20x) = (7-20)x = -13x -13x+8
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