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  LiveWire / Teen Forums / School & Homework Connection / Viewing Topic

ugh math HELP please
Replies: 6 — Last Post Jan. 6 9:48pm by buffered
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( ashleexoxo )


Advisor 		Reply
you can use subsitution or elimination

6x + y - 4z = -8
   y/4 - z/6 =0
2x        - z   = -2


yea i think it come out to be a fraction but im not sure
need help with the steps to do it

3:37 pm on Jan. 6, 2009 | Joined: Aug. 2008 | Days Active: 36
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Lukes Father


Wealthy Hobo
Sustainer 		Reply
what are you solving for exactly?

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3:38 pm on Jan. 6, 2009 | Joined: Jan. 2009 | Days Active: 73
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WhoElse


Professional 		Reply
solve everything for z and then plug it in

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Kilanna


Wealthy Hobo 		Reply
What the hell kind of math is that?!?!?

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Drinkingjam


Executive 		Reply
E=Mc2*Chuck(NorrisX666)

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nullPointerException


Dairy Product Addict 		Reply
Google matrices and crammer's rule
7:32 pm on Jan. 6, 2009 | Joined: May 2008 | Days Active: 150
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buffered


Dairy Product Addict 		Reply
from ur 3rd eqn, make z the subject.

z = 2x + 2. sub this into eqn 1 and 2

will give you 2 new equations with only x and y in it.

solve x and y.

once you found x and y, z is there for the taking.

Post edited at 9:56 pm on Jan. 6, 2009 by buffered

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9:48 pm on Jan. 6, 2009 | Joined: June 2004 | Days Active: 105
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