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November 25, 2014

November 25, 2014

Posted by **gdlola** on Friday, March 2, 2012 at 9:50am.

x+y=11

x-y=5

- Algebra -
**drwls**, Friday, March 2, 2012 at 10:03amx =

|11 1|

|5 -1|

------

|1 1|

|1 -1|

= -16/-2 = 8

y = 11-x = 3

The | | /| | symbols represent the ratios of two 2x2 determinants

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