Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - Chapter R Test Prep - Review Exercises - Page 83: 50


$\color{blue}{\dfrac{26}{5} \text{ or } 5.2}$

Work Step by Step

Substitute the given values of the variables to obtain: $=(-1-2) \div 5\cdot(-2)+4$ Simplify within the parentheses to obtain: $=(-3) \div 5 \cdot (-2) + 4$ Perform the division: $=-\dfrac{3}{5} \cdot (-2) + 4$ Multiply: $=\dfrac{6}{5} + 4 \\=\dfrac{6}{5} + \dfrac{20}{5}$ Add: $\\=\dfrac{6+20}{5} \\=\color{blue}{\dfrac{26}{5} \text{ or } 5.2}$
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