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 69: 80



Work Step by Step

First, we simplify the expression: $3.4x-1.9x+5.2x$ =$1.5x+5.2x$ =$6.7x$ We evaluate the expression by substituting the value of $x=0.3$ into the expression, $6.7x$ =$6.7(0.3)$ =$\frac{67}{10}\times\frac{3}{10}$ =$\frac{67\times3}{10\times10}$ =$\frac{201}{100}$ =$2.01$
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