Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 1, Equations and Inequalities - Chapter Test - Page 65: 23



Work Step by Step

The two possibilities are $f+3=2f+4$ or $-f-3=2f+4$ The first equation, after subtracting f-4 from both sides, gives f=-1 which when plugging back in gives |2|=|2| The other equation gives $f=-7/3$ which when plugging back in gives, |some number | = some negative number, Which is extraneous since an absolute value cannot yield a negative number.
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