Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - 2.3 - Real Numbers and Algebraic Expressions - Problem Set 2.3 - Page 68: 66



Work Step by Step

1. Expand the algebraic expression: $4(x+0.7)-9(x+0.2)-3(x-0.6)$ =$4x+2.8-9x-1.8-3x+1.8$ 2. Rewrite the expression: $4x+2.8-9x-1.8-3x+1.8$ $=4x-9x-3x+2.8-1.8+1.8$ 3. Use the distributive property to simplify the algebraic expression and then add/subtract: $4x-9x-3x+2.8-1.8+1.8$ $=x(4-9-3)+2.8-1.8+1.8$ $=x(-8)+2.8$ $=-8x+2.8$
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