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Evaluate Expressions
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Evaluate Expressions

by Jay
(TX)








































Evaluate the following expression:

-14-12+8+-7

Apply the “Associative” and “Commutative” properties of real numbers.

Comments for Evaluate Expressions

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Jul 26, 2011
Evaluate Expressions
by: Staff


The question:

by Jay
(TX)

-14-12+8+-7


The answer:

Because of the “Associative” and “Commutative” properties of real numbers, the series of values in your expression can be combined in any order. In every case the answer will be the same.

The “Associative” and “Commutative” properties are valid for all real numbers (including: fractions, decimals, and negative numbers).


Example of the Commutative Property of Addition:

4 + 7 = 7 + 4

Example of the Associative Property of Addition:

1 + (4 + 7) = (1 + 4) + 7 = (1 + 7) + 4


Evaluation of your expression:

-14-12+8+-7

= (-14-12) + 8 +-7

= -26 + 8 +-7

= (-26 + 8) +-7

= -18 - 7

= -25


(1) Click the following link to VIEW how this looks on a number line; or (2A) highlight and copy the link, then (2B) paste the link into your browser Address bar & press enter:

Use the Backspace key to return to this page:

http://www.solving-math-problems.com/images/number-line-14-12-8-7.png


the final answer to your question is:

-14-12+8+-7 = -25





Thanks for writing.

Staff
www.solving-math-problems.com



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