Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-6 Multiplying and Dividing Real Numbers - Practice and Problem-Solving Exercises: 46

Answer

$-\frac{3}{10}$

Work Step by Step

Substitute the given values and simplify. $\frac{x}{y}=\frac{\frac{2}{7}}{-\frac{20}{21}}$ multiply by the reciprocal $=\frac{2}{7}\times-\frac{21}{20}$ cancel common factors $\frac{/\!\!2}{/\!\!7}\times-\frac{/\!\!7\times3}{/\!\!2\times10}$ $=-\frac{3}{10}$
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