Question: (1 point) Solve the system 4x1 -3x2 +4x3 +2x4 = 4 +x2 +3x3 +3x4 = 2 -X1 3x1 -2x2 +7x3 +5X4 = 6 -3x1 +3x2

(1 point) Solve the system 4x1 -3x2 +4x3 +2x4 = 4
(1 point) Solve the system 4x1 -3x2 +4x3 +2x4 = 4 +x2 +3x3 +3x4 = 2 -X1 3x1 -2x2 +7x3 +5X4 = 6 -3x1 +3x2 +9x3 +9x4 = 6 I X1 X2 +s +t = X3 X4

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