x1 2x2 x3 2x4 3x1 5x2 2x3 3x4 2x1 5x2 2x3 5x4 x1 4x2 4x3
Chapter , Problem 48(choose chapter or problem)
x1 2x2 x3 2x4 3x1 5x2 2x3 3x4 2x1 5x2 2x3 5x4 x1 4x2 4x3 11x4 1 2 0 3 x1 2x2
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