Answer
$x=-\displaystyle \frac{3}{2}$
Work Step by Step
There has to be a common difference between terms...
$(5x+2)-(2x+1)=(2x+1)-(x+3)$
$3x+1=x-2$
$2x=-3$
$x=-\displaystyle \frac{3}{2}$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 9 - Section 9.2 - Arithmetic Sequences - 9.2 Assess Your Understanding - Page 655: 57
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