One Question, Help?
8.) Solve the system by elimination -2x+2y+3z=0 -2x-y+z=-3 2x+3y+3z=5
I am no good at this elimination shat
me neither, that is what computer are for
you need a method or an answer ?
in this case the method is not that hard, but still ...
google system of 3 linear equations calculator it will come up
or use this http://www.wolframalpha.com/input/?i=-2x%2B2y%2B3z%3D0%2C+-2x-y%2Bz%3D-3%2C+2x%2B3y%2B3z%3D5+
one approach pick 2 equations and eliminate one variable. pick a different set of 2 equations and eliminate the same variable you eliminated when you did the first 2 equations. now you have 2 equations with 2 variables. can you continue now?
eh
yes hold on
x = 1; y = 1; z = 0; (x, y, z) = (1, 1, 0) that is the answer?
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