College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.2 - Real Numbers - P.2 Exercises - Page 15: 31


(a) 3 (b) $\frac{13}{20}$

Work Step by Step

(a) $\frac{2}{3}(6-\frac{3}{2})=\frac{2}{3}*6-\frac{2}{3}*\frac{3}{2}=4-1=3$ (b) $(3+\frac{1}{4})(1-\frac{4}{5})=(\frac{3*4}{1*4}+\frac{1}{4})(\frac{1*5}{1*5}-\frac{4}{5})=(\frac{12}{4}+\frac{1}{4})(\frac{5}{5}-\frac{4}{5})=(\frac{13}{4})(\frac{1}{5})=\frac{13}{20}$
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