# Chapter 2 - Equations, Inequalities, and Problem Solving - 2.7 Solving Applications with Inequalities - 2.7 Exercise Set - Page 142: 61

$-18$

#### Work Step by Step

The sign of 18 is positive, however we did not write it before the number. If we change this it will be a negative sign: $-18$

After 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.