## Basic College Mathematics (9th Edition)

Published by Pearson

# Chapters 1-9 - Cumulative Review Exercises: 26

#### Answer

The number is $-10$.

#### Work Step by Step

Let $x =$ the unknown number $40 + 4x = 0$ $4x = -40$ $x = \frac{-40}{4}$ $x = -10$

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