Answer
20
Work Step by Step
Replace $x$ with 1 and $y$ with -18 in $2x-y$:
$2x-y=2\times(1)-(-18)=2+18=20$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 2 - Section 2.3 - Subtracting Integers - Exercise Set - Page 120: 61
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
