can somone help me with this one 2x-4y=20

4x+2y=-20 (Angry)

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- Dec 13th 2010, 11:39 AMshadower4cramers rule problem
can somone help me with this one 2x-4y=20

4x+2y=-20 (Angry) - Dec 13th 2010, 11:55 AMBariMutation
What are you trying to do? Find the values of x and y? If so, solve for x in the first one, and then substitute that value into the second equation. This will give you y. From here, just substitute the y into either one of the original two equations to get x.

- Dec 13th 2010, 11:57 AMsnowtea
Also, if the problem asks you to solve it by Cramer's rule, then use Cramer's rule.

Try to at least set up the problem for Cramer's rule, and we can help you from there. - Dec 13th 2010, 05:20 PMmr fantastic
You were shown in detail how to do questions like this one at one of your earlier posts: http://www.mathhelpforum.com/math-he...se-165842.html

Please try to learn something from the help you get given.

Thread closed.