   Chapter 2.1, Problem 51E

Chapter
Section
Textbook Problem

Add: ( − 1 ) + ( − 2 ) + ( + 9 ) + ( − 8 )

To determine

To calculate: The sum of the expression (1)+(2)+(+9)+(8).

Explanation

Given Information:

The expression is (1)+(2)+(+9)+(8).

Formula used:

Steps for the addition of more than two signed numbers:

1). Perform addition for all the numbers that have positive sign.

2). Perform addition for all the numbers that have negative sign.

3). Perform addition of both the above steps by using the rule of addition of two signed numbers.

Steps for the addition of two unlike signed numbers:

1). Determine the difference of their absolute values.

2). If absolute value of positive number is greater than the negative number; a positive sign may or may not be used before the result.

3). If absolute value of negative number is greater than the positive number; a negative sign is used before the result.

Calculation:

Consider the provided expression:

(1)+(2)+(+9)+(8)

Add the negative numbers

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