W 2. Which of the following is an example of a linear system of equations? O 5z + 6y = 13 6z 12y 14 O 5z? + 6y = 13 6z – 12y = 14 O 5z + 6y = 13 6z - 12y = 14 O 5x + 6y = 13 6z2 - 12y = 14

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