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Mathematics 17 Online
OpenStudy (anonymous):

Solve the following system of equations. 2x + 4y - 3z = -7 3x + y + 4z = -12 x + 3y + 4z = 4

OpenStudy (mertsj):

1. Multiply the 2nd equation by -4 2. Add that answer to the 1st equation 3. Multiply the 2nd equation by -3 4. Add that answer to the 3rd equation. Take the answers from steps 2 and 4 and solve that system of two equations with 2 variables.

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