Elementary Algebra

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

Chapter 2 - Real Numbers - 2.1 - Rational Numbers: Multiplication and Division - Problem Set 2.1 - Page 48: 38



Work Step by Step

Factor 21 and 24 to obtain: $=\left(-\dfrac{6}{7}\right)\left(-\dfrac{7(3)}{6(4)}\right)$ Cancel the common factors to obtain: $\require{cancel} =\left(-\dfrac{\cancel{6}}{\cancel{7}}\right)\left(-\dfrac{\cancel{7}(3)}{\cancel{6}(4)}\right) \\=(-1) \cdot \left(-\dfrac{3}{4}\right) \\=\dfrac{3}{4}$
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