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4 Answers
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- 123Lv 68 years ago
3x+3y+3z=90
3x+4y+5z=96
============
-y-2z=-6
y+2z=6
y=6-2z
x=30-(6-2z)-z=30-6+2z-z=24+z
z=30-x-y
Source(s): experience - Anonymous8 years ago
All you can find out from those equations is y+2z=6, 2x+y=54 and x-z=24. You can't find the exact values unless you have a 3rd non-equivalent equation (ie 2x+2y+2z=60 will not work).
- Anonymous8 years ago
3 unknowns require 3 equations for solution.
- Anonymous8 years ago
It is right after W
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