Sunday, January 30, 2011

aleks.com

This week we were introduced to Aleks.com which is a website to help better our math skills. I have been working on a lot of old algebra things I have lost my grip on and I like that the website is helping me get back into the hang of the old concepts. So for my blog I am going to go back to Algebra and go over solving a linear equation.

Im just going to do a few examples because im not sure how to explain this concept to well.

Example:
-2= 7x-9/6- 8x+5/7
First we are going to examine the problem and determine the least common demominator.
The least common denominator is 42.
Multiply 42 by each segment of the problem.

(42)-2= 42(7x-9/6-8x+5/7)
(42)-2+ 42(7x-9/6)-42(8x+5/7)
Now divide into the LCD.
-84= 7(7x-9)-6(8x+5)
-84= 49x-63-48x-30
-84=x-93
Now solve for x and
answer is.... x=9

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