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Q7) Solve by Cramer's rule, where it applies -x1-4x2 + 2x3 + x4 = -32 - 2x1 x2+7x3+9x4 = = 14 -x1 + x2

Q7) Solve by Cramer's rule, where it applies -x1-4x2 + 2x3 + x4 = -32 - 2x1 x2+7x3+9x4 = = 14 -x1 + x2 + 3x3 + x4 = x1 - 2x2 + x3 - 4x4 = 11 -4

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