Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-1 Solving One-Step Equations - Practice and Problem-Solving Exercises - Page 87: 86



Work Step by Step

This is an order of operations problem. There are brackets, so the first operation is the stuff within the brackets. Within the brackets, we see 2-3 in parenthesis, so we do this first, finding that 2-3=-1. This gives us the following: 2[2-(-1)-2] A key rule to remember is that subtracting a negative is the same as addition. Thus, we find: 2[2+1-2] =2[3-2] =2[1] =2
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