Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Appendix A - A.3 - Inequalities - Exercises: 28

Answer

not true if $c= $0

Work Step by Step

let $a= $1 $b= $2 $c= $0 $a\times $c = 0 $1\times $0=0 $b\times$c = 0 $2\times$0=0 thus $a\times $c = $b\times $c
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