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July 4, 2015

Homework Help: Algebra

Posted by Max on Saturday, November 13, 2010 at 8:06pm.

Solving systems of linear equations in 3 variables...

1) 3x-2y+2z=1
2) 2x+5y-5z=7
3) 4x-3y+z=-3

I combined 1 and 3 to get -5x+4y=7
And then i combined 2 and 3 to get
-13y+11z=-17. Can that be right? how would you combine those two equations?

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