   Chapter 2.2, Problem 26SND

Chapter
Section
Textbook Problem

Add or subtract the following signed numbers: ( − 2 ) _ _ ( − 9 )

To determine

The value of the expression when the provided signed numbers (2)__(9) are added or subtracted.

Explanation

Given Information:

The provided statement is:

“Add or subtract the signed number (2)__(9)”.

Consider the expression:

(2)__(9)

In order to add two negative numbers, their absolute values must be added-up and a negative sign should be placed before the result. That is,

(2)+(9)=11

Now, in order to subtract two signed numbers, the sign of the number being subtracted must be changed and then added in accordance with the rules for addition of signed numbers

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