Posted by donald on Friday, October 7, 2011 at 8:42pm.
3x+y+2z=1
x+2yz=8
3xy3z=18
after I isolate x what is the 2nd equation

math  Steve, Saturday, October 8, 2011 at 12:41am
depends on how you isolate x.
isolate it from the first equation and you have 1/3 * (1y2z) + 2y z = 8
1y2z + 6y 3z = 24
5y 5z = 23
Anyway, you end up with (x,y,z) = (15, 6, 11)
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