Posted by kailin on Friday, July 15, 2011 at 1:33am.
1 2 6
1 1 8
1st - 2nd
1 2 6
0 1 -2
1st - 2x2nd
1 0 10
0 1 -2
so x = 10
y = -2
(using matrices to solve this simple system is like using a sledge-hammer to crack a peanut.
Substitution would have been so easy)
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