Answer
See below.
Work Step by Step
$2x+5y=5\\5y=5-2x\\y=1-0.4x$
Thus $4x+10(1-0.4x)=A\\4x+10-4x=A\\10=A$
Thus we have no solutions of $10\ne A$.
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 8 - Review Exercises - Page 635: 54
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