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## Re: [MathWithoutBorders] Algebra I - Do we need to finish entire text?

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• This is a simple answer I m sure but can anyone tell me why: 4.5x - 7.1x + 11.6 = 11.6 - 2.6x and NOT -2.6x + 11.6 thank you. Mary
Message 1 of 4 , Nov 30, 2012
This is a simple answer I'm sure but can anyone tell me why:

4.5x - 7.1x + 11.6 = 11.6 - 2.6x and NOT  -2.6x + 11.6

thank you.

Mary
• The two answers are equivalent. You can move the terms around on one side of an equation as long as you move the sign with the number (or expression) it is
Message 2 of 4 , Nov 30, 2012
The two answers are equivalent.  You can move the terms around on one side of an equation as long as you move the sign with the number (or expression) it is part of.  This is the commutative property of addition.
--David Chandler

On Fri, Nov 30, 2012 at 2:55 PM, Mary Rainey wrote:

This is a simple answer I'm sure but can anyone tell me why:

4.5x - 7.1x + 11.6 = 11.6 - 2.6x and NOT  -2.6x + 11.6

thank you.

Mary

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