Try another version of this question Write the augmented matrix as a system of equations `[(1,-4,3,100),(0,1,-2,200),(0,0,1,400)]` `x` + `y` + `z =` `x` + `y` + `z =` `x` + `y` + `z =` Get help: Video 1 -4 3 100 0 1 -2 200 0 0 1 400
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