Elementary Algebra

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

Chapter 7 - Algebraic Fractions - 7.5 - Fractional Equations and Problem Solving - Concept Quiz 7.5 - Page 305: 4

Answer

Only B is a proportion.

Work Step by Step

A proportion is when two fractions are set equal to each other. Thus, nothing but the two fractions can be added or subtracted from either side of the equation. Things are added in A and C, so they are not a proportion. Only B involves two fractions being set equal to each other without addition or subtraction on either side of the equation.
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