Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapters 1-3 - Adding and Subtracting Fractions - Cumulative Review - Page 262: 27

Answer

Estimate: 5 - 2 = 3 Exact:$2\frac{5}{8}$

Work Step by Step

$5-2\frac{3}{8}$ First Lets Find Estimate: $2\frac{3}{8}$ rounds to 2 Now, $5-2\frac{3}{8}$ = 5 - 2 = 3 Now find Exact: $5-2\frac{3}{8}$ = $5-\frac{2\times8+3}{8}$ = $5-\frac{19}{8}$ = $\frac{5\times8}{1\times8}-\frac{19}{8}$ (LCM of 1 & 8 is 8) = $\frac{40}{8}-\frac{19}{8}$ = $\frac{40-19}{8}$ = $\frac{21}{8}$ = $2\frac{5}{8}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.