Question: x1 - X2 + 3x3 + 2x4 = 5 1+ x2+ 3 + 2x4 = 15 3x1 - 2 + 7x3 + 6 4 =

x1 - X2 + 3x3 + 2x4 = 5 1+ x2+ 3 + 2x4 = 15 3x1 - 2 + 7x3 + 6 4 = 25 3x1 + X2 + 5x3 + 6x4 = 35 O No solutions. O 1 0 2 C 3 4 O -2 2 20 1 107 2 2 5 O o + 23 + 24 X 3 0 where x3 and x4 can be any real numbers. O -3 1 C2 H O + 2 + 24 OOHH + 23 C 3 O where 2, 3, and x4 can be any real numbers. O C 1 0 0 C 2 10 + 24 LL C 3 5 where x4 can be any real numbers

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