Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-5 Adding and Subtracting Real Numbers - Practice and Problem-Solving Exercises: 51

Answer

1

Work Step by Step

$-2.1-[2.3-(3.5-(-1.9))]\longrightarrow$ in the innermost parentheses, change subtraction to addition, and reverse the sign of the following term =$-2.1-[2.3-(3.5+1.9)]\longrightarrow$ add in innermost parentheses =$-2.1-[2.3-5.4]\longrightarrow$ subtract within brackets =$-2.1-[-3.1]\longrightarrow$ change subtraction to addition, and reverse the sign of the following term =$-2.1+3.1\longrightarrow$ add =$1$
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