Refer to the System of Linear Equations below. 4x1 - X2- X3 = 3 -2x1 +6x2 +X3 = 9 -X1 +x2 + 7x3 = -6 Using Jacobi Method, what is value of x1 in the first iteration? O 0.911 O 0.750 O 0.857 O 1.500

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