   Chapter 2.2, Problem 7E

Chapter
Section
Textbook Problem

Subtract: ( − 3 ) − ( − 9 )

To determine

To calculate: The subtraction of an expression (3)(9).

Explanation

Given Information:

The expression is,

(3)(9)

Formula used:

To subtract the two signed numbers, the following steps are used:

1). Subtract the numbers by changing their sign.

2). Use the rule of addition of two unlike or like signed number.

Calculation:

Consider the provided expression.

(3)(9)

Change the sign of the numbers

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