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Mathematics, 22.06.2019 20:00 soccerjessie40901

Precalculus: ** solve using *** 30 points & i will award brainliest! solve the system of equations using matrices. use gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2 it would be great if you could send me an attachment of the step by step work using matrices! i'm really confused rn

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