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Mathematics 9 Online
OpenStudy (ltrout):

[WILL MEDAL+ FAN] Matrices & Variables! Question is in the comments!

OpenStudy (ltrout):

OpenStudy (anonymous):

ok...

OpenStudy (ltrout):

A) x=-4 and y=2 B) x=5 and y=-1 C) x=4 and y=-2 D) x=-5 and y=1

OpenStudy (anonymous):

B

OpenStudy (ltrout):

I'd like to know how to managed to get B... Because if you look on the bottom of the Matrix, [4x] - [x] = [12]. So how is 4(5) - 5 = 12..?

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