Posted by anonymous on Saturday, October 11, 2008 at 2:38pm.
solve the system by elimination.
6x6y4z=10
5z+4yz=12
2x+3y2z=9

math  drwls, Saturday, October 11, 2008 at 6:00pm
Multiply the last equation (both sides) by 2. That gives you
4x + 6y  4z = 18
Add that to
6x  6y  4z = 10
That gives you
10x 8z = 8
So far, we have eliminated the variable y.
Use similar tricks to get rid of x or z.
I believe your second equation is typed incorrectly. Did you mean
5x +4y z = 12?
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