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Q&A #3418

Teachers' Lounge Discussion: Math Solving

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From: Loyd <loydlin@aol.com>
To: Teacher2Teacher Public Discussion
Date: 2004030221:49:45
Subject: Re: math solution

On 2004030218:14:10, matt wrote:
>can you please try to solve my problem?
>	-56=-2(5w+8)-(3w-12)
>
>
>                       Thank you
>

A minus sign  before a Parenthesis will result in every sign inside
changing so:

-56=-10w - 16 - 3w + 12 Collect like terms on right side

-56 = -13w -4  Add +4 to each side of the equation

-52 = =13w    Divide both sides by -13

4 = w or 
w = 4  

Check by pluging 4 into each w of the original eq.

-56=-10(4) - 16 - 3(4) + 12 
-56 = -40 -16 -12 + 12
-56 = -40 -16 
-56 = -56  Checks






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