Answer
7
Work Step by Step
Given $\frac{3}{5}$=$\frac{6}{x+3}$
Cross Multiply:
3(x+3)=5(6)
3x+9=30
3x=21
x=7
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 7 - Similarity - 7-1 Ratios and Proportions - Practice and Problem-Solving Exercises - Page 436: 23
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