SOLUTION: Hello: I am very new to algebra. I am just beginning to understand how to simplify equations. However, for the following one I just don't understand how to begin. Any help

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Hello: I am very new to algebra. I am just beginning to understand how to simplify equations. However, for the following one I just don't understand how to begin. Any help       Log On


   



Question 44734: Hello:
I am very new to algebra. I am just beginning to understand how to simplify equations. However, for the following one I just don't understand how to begin.
Any help would be greatly appreciated. You don't have to solve it for me but just a little help understanding how to approach it would be great.
12x^3 - 2x / 6x
Thank you

Found 2 solutions by adamchapman, Danielle82:
Answer by adamchapman(301) About Me  (Show Source):
You can put this solution on YOUR website!
You have 12x%5E3+-+2x+%2F+6x
The x's in the second term will cancel each other out, because anything divided by itself is just the number one:
12x%5E3+-+2x+%2F+6x=12x%5E3-%282%2F6%29%28x%2Fx%29=12x%5E3-%282%2F6%29%281%29=12x%5E3-2%2F6
the simplest way to express an fraction is by having the number one on the top of that fraction:
2%2F6=1%2F3 (by dividing top and bottom by 2)
Now we have 12x%5E3-1%2F3
It would be best to have the x%5E3 on its own, without the 12 next to it. So divide everything by 12:
x%5E3-1%2F36
I hope this helps.
P.S. I am trying to start up my own homework help website. I would be extremely grateful if you would e-mail me some feedback on the help you received to adam.chapman@student.manchester.ac.uk
Adam

Answer by Danielle82(1) About Me  (Show Source):
You can put this solution on YOUR website!
Hello-
To simplify an equation you need to factor out both the numerator and demoninator if possible. Then cancel out any common factors they have. Hope this helps.
+%2812x%5E3+-+2x%29%2F6x+
Factor each side
+%283+%2A+4+%2A+x+%2A+x+%2A+x+-+2+%2A+x%29%2F+%282+%2A+3+%2A+x%29+
Cancel out each side of common factors
Since there is a 2,3, and x common to both the top and the bottom we cancel them out and are left with:
+4x%5E3+
Hope this helps
-Danielle