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OpenStudy (anonymous):
Solve the matrix equation. It's a 3x3 matrix. [1 1 2] [7] [2 4 -3] X= [12] [3 6 -5] [-9]
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hero (hero):
Multiply both sides by \(A^{-1}\)
hero (hero):
to isolate x, then simplify the right side.
OpenStudy (anonymous):
|dw:1372085184647:dw|
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