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Mathematics 7 Online
OpenStudy (anonymous):

matrix: 2x+3y+ 7z= 13 3x+2y - 5z = -22 5x+7y - 3z = -28

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

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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