Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 4 - Section 4.8 - Solving Equations Containing Fractions - Exercise Set: 21

Answer

-$\frac{1}{3}$

Work Step by Step

$\frac{20}{21}$ -$\frac{10}{21}$-$\frac{17}{21}$ = =$\frac{20-10-17}{21}$ = =$\frac{-7}{21}$ =$\frac{-7\times1}{7\times3}$ = -$\frac{1}{3}$
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