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Whos willing to help me with a simple algebra pro

 
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Erikaa99182 View Drop Down
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Post Options Post Options   Thanks (2) Thanks(2)   Quote Erikaa99182 Quote  Post ReplyReply Direct Link To This Post Posted: Dec 11 2013 at 11:27pm
Like others mentionned, the problem is you're multiplying the (x-y) by z twice since 5z*z(x-y) = 5 z^2 (x-y)
Basically, what you have to do is:
V = 5((x-y)/2) + w

Multiply both sides by z gives you:
V*z = Z * [5((x-y)/2) + w]

When you distribute the z to both the 5((x-y)/2) and the w, you get:
V*z = 5z((x-y)/2) + w*z.                 And not v*z = 5z*z((x-y)/2) + w*z (there's one too many z here as mentionned before)

Finally, when you eliminate the z in the first term on the right side of the equation, you get:
V*z = 5(x-y) + w*z

The z can't just be taken off since there is one term (the 5(x-y)) that doesn't have the z.
Both terms on the right side of the equation would have to have the z in them for you to be able to simplify your equation like you're trying to do,
But that isn't possible in this situation.

Makes sense? Sorry, which I could write it down and show you better than this...
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liesnalibis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 11 2013 at 11:48pm
Ahhhhhhh I got it after (several more attempts)!!!!!



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liesnalibis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 11 2013 at 11:50pm
Thank you to  EVERYONE!!!!! that helped me. BHM has some smart and patient ladies! You're the best! Hug

I do need to find some more problems like this though so I can get my technique down...
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liesnalibis View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 11 2013 at 11:53pm
Instead of just crossing stuff out I actually wrote the entire problem out step by step. I notice that whenever I try to skip a step or do it in my head, THAT'S when I mess up. By writing out each fraction and multiplying step by step I don't lose anything or forget what I was doing.
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liesnalibis View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 11 2013 at 11:54pm
So when I finally get it I get a one star? Whoever you are, you're a funny girl! LOL
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_ConcreteRose_ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _ConcreteRose_ Quote  Post ReplyReply Direct Link To This Post Posted: Dec 11 2013 at 11:58pm
Good job!
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liesnalibis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 12 2013 at 12:01am
Originally posted by _ConcreteRose_ _ConcreteRose_ wrote:

Good job!

Thanks, girl!
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Bored w/Out Me? View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Bored w/Out Me? Quote  Post ReplyReply Direct Link To This Post Posted: Dec 12 2013 at 12:08am
WTG Erikaa, You graduate from High School @12???
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liesnalibis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 12 2013 at 12:11am
Originally posted by Bored w/Out Me? Bored w/Out Me? wrote:

WTG Erikaa, You graduate from High School @12???

lol
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liesnalibis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote liesnalibis Quote  Post ReplyReply Direct Link To This Post Posted: Dec 12 2013 at 12:12am
Erikaaa and Concrete, since you guys seem to be into math, have you ever heard of Khan Academy?
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