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January 27, 2015

January 27, 2015

Posted by **kailin** on Friday, July 15, 2011 at 1:33am.

x = -2y + 6

2x + 2y = 16

- math -
**Reiny**, Friday, July 15, 2011 at 7:50am1 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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