SOLUTION: Solve by sustituion and the addition method: x+y-z=8 2x+y+z=1 x+2y+3z=-5 It looks simple but I've tried to eliminate each of the variables and still can't solve this one! H

SOLUTION: Solve by sustituion and the addition method: x+y-z=8 2x+y+z=1 x+2y+3z=-5 It looks simple but I've tried to eliminate each of the variables and still can't solve this one! H

Algebra.Com

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