Algebra 1

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

Chapter 2 - Solving Equations - 2-7 Solving Proportions - Practice and Problem-Solving Exercises - Page 128: 47



Work Step by Step

Use cross multiplication since the variable is in the denominator. $\frac{1.5}{y}=\frac{2.5}{7}$ cross multiply $2.5y=10.5$ divide both sides by 2.5 $2.5y\div2.5=10.5\div2.5$ simplify $y=4.2$
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