Answer
$x=4$
Work Step by Step
$(9-x)/(19-x) = 1/3$
$(9-x)*(19-x)*3/(19-x) = 1/3*(19-x)*3$
$(9-x)*3=19-x$
$27-3x=19-x$
$27-3x+3x-19=19-x+3x-19$
$8=2x$
$8/2=2x/2$
$x=4$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 8 - Cumulative Review - Page 534: 31
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