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Mathematics 11 Online
OpenStudy (anonymous):

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 z is eliminated in the first and second equations, then the second and third equations. x + y - 3z = -8 2x + 2y + z = 12 3x + y - z = -2 x + y = -8 3x + y = -2 x + y = -8 5x + 3y = 14 7x + 7y = 28 3x + y = -2 7x + 7y = 28 5x + 3y = 10

OpenStudy (anonymous):

why don't you use Cramer's method to solve for any variable?

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