Mathematics, 24.06.2019 23:50 astigall4272

In the system below, use equation (1) with equation (2) to eliminate x. then use equation (1) with equation (3) to eliminate x. x-y-2z=4 (1) -x+3y-z=8 (2) -2x-y-4z=-1 (3) what is the new 2 × 2 system?

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