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OpenStudy (anonymous):
matrix: 2x+3y+ 7z= 13 3x+2y - 5z = -22 5x+7y - 3z = -28
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OpenStudy (anonymous):
@phi can you help me?
OpenStudy (precal):
use elimination
OpenStudy (anonymous):
what does that mean?
OpenStudy (precal):
multiply -3 to the first equation multiply 2 to the second equation
OpenStudy (anonymous):
we have to use matrix
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OpenStudy (precal):
idea is to get rid of one variable at a time matrix - even better can you put it in the calculator?
OpenStudy (precal):
|dw:1338861644110:dw|
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