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Mathematics 14 Online
OpenStudy (anonymous):

Matrix things... Please help with Cramers rule. Use cramers rule to solve... 4x+3y=4 -3x-y=7

OpenStudy (dan815):

Do you know what cramers rule is

OpenStudy (anonymous):

All I really know is that I'm supposed to set up the equation as... 4 3 | 4 -3 0| 7

OpenStudy (dan815):

yep, now* you have to find determinant stuff

OpenStudy (anonymous):

How do I do that?

OpenStudy (dan815):

okay ill just tell you the formula for now, and if u want we can go over why this works later

OpenStudy (dan815):

First you need to find 3 determinants D , D_x and D_y

OpenStudy (dan815):

|dw:1431641368061:dw|

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