Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-8 Proportions and Similar Figures - Mixed Review - Page 136: 37



Work Step by Step

$\frac{20}{14}=\frac{2-x}{7}$ cross multiply $14(2-x)=140$ distributive property $28-14x=140$ subtract 28 from both sides $28-14x-28=140-28$ combine like terms $-14x=112$ divide both sides by -14 $-14x\div-14=112\div-14$ divide $x=-8$
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