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Mathematics 18 Online
OpenStudy (anonymous):

Solve the following system of equations using the inverse matrix method! LOOK BELOW!!!

OpenStudy (anonymous):

OpenStudy (anonymous):

@SolomonZelman

OpenStudy (solomonzelman):

\[x-4y=-28\]\[7x+y=36~~~~~~~->~~~~~~y=36-7x\] \[x-4(36-7x)=-28\]\[x-144+28x=-28~~~~~~->~~~~~~29x=116~~~~~~->~~~~~x=4\]now solve for y.

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