SOLUTION: I can't solve this problem 4(w+2x)+9(-4w) And this problem 3(2n+4)-2(3n+6) I have tried two different ways I'm just not sure if they are right!

Algebra ->  College  -> Linear Algebra -> SOLUTION: I can't solve this problem 4(w+2x)+9(-4w) And this problem 3(2n+4)-2(3n+6) I have tried two different ways I'm just not sure if they are right!      Log On


   

Question 920259: I can't solve this problem 4(w+2x)+9(-4w)
And this problem 3(2n+4)-2(3n+6)
I have tried two different ways I'm just not sure if they are right!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

4%28w%2B2x%29%2B9%28-4w%29 Start with the given expression.

4%28w%29%2B4%282x%29%2B9%28-4w%29 Distribute

4w%2B8x-36w Multiply

-32w%2B8x Combine like terms.

So 4%28w%2B2x%29%2B9%28-4w%29 simplifies to -32w%2B8x

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3%282n%2B4%29-2%283n%2B6%29 Start with the given expression.

3%282n%29%2B3%284%29-2%283n%29-2%286%29 Distribute

6n%2B12-6n-12 Multiply

0 Combine like terms.

So 3%282n%2B4%29-2%283n%2B6%29 simplifies to 0

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Let me know if you need more help or if you need me to explain a step in more detail.
Feel free to email me at jim_thompson5910@hotmail.com
or you can visit my website here: http://www.freewebs.com/jimthompson5910/home.html

Thanks,

Jim