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Theresa is solving the following system of equations using matrices. 2x + 3y - 2 = 15 3x + 7y = 20 6x - y

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Theresa is solving the following system of equations using matrices. 2x + 3y - 2 = 15 3x + 7y = 20 6x - y - 5z = 13 Which augmented matrix should she use? O 6 -5 -11 15 1 20 w 3 7 13 O 3 -15 NN -1 20 -5 0 13 O 3 -1 15 OWN 7 0 20 -1 -51 13 O -6 -1 15 7 -1 20 10 -5 13

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