## Basic College Mathematics (10th Edition)

Published by Pearson

# Chapter 9 - Basic Algebra - 9.8 Using Equations to Solve Application Problems - 9.8 Exercises - Page 687: 31

#### Answer

The number is $7$.

#### Work Step by Step

Let $x =$ the number $30 - 3x = 2 + x$ $30 - 2 = x + 3x$ $28 = 4x$ $4x = 28$ $x = \frac{28}{4}$ $x = 7$

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.