Elementary Algebra

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

Chapter 2 - Real Numbers - 2.2 - Addition and Subtraction of Rational Numbers - Problem Set 2.2: 33

Answer

-31/7

Work Step by Step

In order to add or subtract fractions, we start by making a common denominator (bottom of the fraction). Thus, we multiply 4/1 (which is the same as 4) by 7/7 to obtain: $-\frac{28}{7}$-($\frac{3}{7}$)=-$\frac{31}{7}$.
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