Answer
$x=-\frac{21}{8}$
Work Step by Step
$\frac{x-3}{5} = \frac{3x}{7}$
cross multiply
$(x-3) * 7 = (3x) * 5$
distribute
$7x-21 = 15x$
subtract 7x from both sides
-21= 8x
divide both sides by x
$x=-\frac{21}{8}$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 2 - Solving Equations - Pull it All Together - Page 151: Task 2C
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