If you were to use the elimination method to solve the following system, choose the new system of equations that would result after the variable y is eliminated in the first and second equations, then the second and third equations.
3x – y + 3z = 1
4x + y – 6z = 3
4x – 2y + 3z = –3
7x – 3z = 4
12x – 9z = 3
7x – 3z = 4
4x – 6z = 3
3x + 3z = 1
12x – 9z = 3
3x + 3z = 1
4x – 6z = 3

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I prefer a question at a time. I'd help you with the first.

Add all equations.

Lol it is a question, 9ut the last 8 sets are choices.

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