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Elementary Technical Mathematics

12th Edition
Dale Ewen
ISBN: 9781337630580

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BuyFindarrow_forward

Elementary Technical Mathematics

12th Edition
Dale Ewen
ISBN: 9781337630580
Textbook Problem

Add or subtract the following signed numbers:

( 7 ) _ _ ( 7 )

To determine

The value of the expression when the provided signed numbers (7)__(7) are added or subtracted.

Explanation

Given Information:

The provided statement is:

“Add or subtract the signed number (7)__(7)”.

Consider the expression:

(7)__(7)

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,

(7)+(7)=14

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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