Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 2 - Section 2.4 - Signed Fractions - Exercises - Page 118: 20



Work Step by Step

Convert each mixed number to an improper fraction to obtain: $=\dfrac{21}{8} \times \dfrac{9(1)+7}{9} \\=\dfrac{10}{3}\times \dfrac{16}{9}$ Multiply the numerators together and the denominators together to obtain: $\require{cancel} \\=\dfrac{10(16)}{3(9)} \\=\dfrac{160}{27} \\=5\dfrac{25}{27}$
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