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College Alegbra

Asked Mar 27, 2007, 08:09 AM — 3 Answers
Solve : 3x+6y= -6 5x-2y=14

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Capuchin's Avatar
Capuchin Posts: 5,319, Reputation: 3601
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#2

Mar 27, 2007, 08:58 AM
Okay so from the first one

3x + 6y = -6

Divide this equation by 3 and rearrange for x, then use this x in your other equation. You will be able to get a value for why. Then you can finally use this value to get a value for x.
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Elisha Grey's Avatar
Elisha Grey Posts: 31, Reputation: 7
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#3

Jan 19, 2009, 02:35 PM
As Capuchin says, divide the first equation by 3 to get
X + 2y = -2. And the second equation is
5x - 2y = 14. Add these two equations to get
6x = 12, so x = 2,and fro the first equation we have
2 + 2y = -2, or 2y = -4, so why = -2
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Capuchin's Avatar
Capuchin Posts: 5,319, Reputation: 3601
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#4

Jan 19, 2009, 03:07 PM
Elisha, once again:

1. Please read This Announcement which gives the site's policy on homework help. If a question is obviously homework, please refrain from posting a complete answer, this helps the poster to learn and do their work for themselves.

2. If you have to post a complete answer, please do more to explain your working and lay it out properly, this can be done by entering more line breaks in your working, and writing a little more, this will help contribute to the site much further, and will help the poster more.
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