Algebra 1

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

Chapter 2 - Solving Equations - Chapter Review - 2-7 and 2-8 Solving Proportions and Using Similar Figures - Page 155: 47


t = 21

Work Step by Step

$\frac{3}{-7}$ = $\frac{-9}{t}$ First, use the Cross Products Property. 3(t) = -7(-9) Simplify the right side of the equation. 3t = 63 (Note: A negative multiplied by a negative is a positive.) To find t, divide both sides of the equation by 3. $\frac{3t}{3}$ = $\frac{63}{3}$ t = 21
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