Answer
c=11
Work Step by Step
$\frac{3}{7}=\frac{c+4}{35}$ multiply both sides by 35
$\frac{3}{7}\times35=\frac{c+4}{35}\times35$ simplify
$\frac{105}{7}=c+4$ subtract 4 from both sides
$15-4=c+4-4$ simplify
$11=c$
Algebra 1
by Hall, Prentice
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 127: 28
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