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OpenStudy (anonymous):
(Fan + Medal) Question :- Solve for x, y and z. x+2y+z=7 x+3z=11 2x-3y=1
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OpenStudy (usukidoll):
use a matrix
OpenStudy (anonymous):
i don't know about matrix
OpenStudy (usukidoll):
alright...we can use addition or substitution method, but writing all of these numbers down over and over is tedious...that's where the matrices come in.
OpenStudy (usukidoll):
|dw:1375099773311:dw|
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