Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 6 - Section 6.5 - Translating Words into Algebraic Symbols - Exercises - Page 248: 20



Work Step by Step

We can call our unknown number "$x$". The difference between a number and 6 can be written as $x-6$ and doubling that would give $2(x-6)$. (Remember to add the parenthesis.) So, $2(x-6)=30$
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