# Chapter 4 - Proportions, Percents, and Solving Inequalities - Chapters 1-4 Cumulative Review Problem Set - Page 186: 9

$-0.1x$

#### Work Step by Step

Using the distributive property, the given expression simplifies to: $0.4x-0.7x-0.8x+x$ =$x(0.4-0.7-0.8+1)$ =$x(0.4-0.7-0.8+1)$ =$x(-0.1)$ =$-0.1x$

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