Mathematics, 15.01.2021 01:00, blueflu5120

3x + 2z - 4y - 6 + 4z + 7y x = 2, y = 1, z = -3

plz help me with this. this is a substitution question.

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3x + 2z - 4y - 6 + 4z + 7y x = 2, y = 1, z = -3

plz help me with this. this is a substit...