Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-7 Solving Proportions - Practice and Problem-Solving Exercises - Page 129: 62

Answer

4.25

Work Step by Step

Let x be the width of the border around the painting. The overall width of the framed painting will include the right and left borders (2×x) and the 30 inch width of the painting itself. 30+2x=38.5⟶ subtract 30 from both sides 30+2x−30=38.5−30⟶ simplify 2x=8.5⟶ divide both sides by 2 2x÷2=8.5÷2⟶ simplify x=4.25
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