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Best Answer

-4x + 3y + 3z = -209

-6x - y - 8z = -209

-9x + 4y - 7z = -418

Make a simple equation from elimination.

-4x + 3y + 3z = -6x- y - 8z

2x + 4y + 11z = 0

-4x + 3y + 3z = -209

4x + 8y + 22z = 0

11y + 25z = -209

Make another simple equation.

-36x - 6y - 48z = -1254

-36x + 16y - 28z = -1672

-22y - 20z = 418

Solve for "z" with the 2 simple equations and then subsitute in simple equations for the solution of "y".

22y + 50z = -418

-22y - 20z = 418

30z = 0

z = 0

11y + 25(0) = -209

y = -19

Subsitute "y" and "z" and solve for "x".

-6x + 19 = -209

-6x = -228

x = 38

(38, -19, 0).

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Q: What is the answer to the equation -4x plus 3y plus 3z equals -209 -6x - y - 8z equals -209 -9x plus 4y - 7z equals -418?
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