## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson

# Chapter 1 - Introduction to Algebraic Expressions - 1.8 Exponential Notation and Order of Operations - 1.8 Exercise Set - Page 67: 119

#### Answer

$-2x-f$

#### Work Step by Step

Using order of operations, the given expression, $\{x-[f-(f-x)]+[x-f]\}-3x$, simplifies to \begin{array}{l}\require{cancel} \{x-[f-f+x]+[x-f]\}-3x \\\\= \{x-[x]+[x-f]\}-3x \\\\= \{x-x+x-f\}-3x \\\\= \{x-f\}-3x \\\\= x-f-3x \\\\= -2x-f .\end{array}

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