11. (2) XY 1 . y + z = 2 (E): 2x + y + z...

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11. (2) XY 1 . y + z = 2 (E): 2x + y + z = 5,ab x - 3y + z = b (1) () (1) #2 #3, (2)() (ii) " = -3 () (1) (2)(). (b)C-27 +34XY z 20 ' m + 39 F + ' NNN 11 2 in = 3z = -2 (3) 0 (4) 11. (2) XY 1 . y + z = 2 (E): 2x + y + z = 5,ab x - 3y + z = b (1) () (1) #2 #3, (2)() (ii) " = -3 () (1) (2)(). (b)C-27 +34XY z 20 ' m + 39 F + ' NNN 11 2 in = 3z = -2 (3) 0 (4) 11. (2) XY 1 . y + z = 2 (E): 2x + y + z = 5,ab x - 3y + z = b (1) () (1) #2 #3, (2)() (ii) " = -3 () (1) (2)(). (b)C-27 +34XY z 20 ' m + 39 F + ' NNN 11 2 in = 3z = -2 (3) 0 (4) 11. (2) XY 1 . y + z = 2 (E): 2x + y + z = 5,ab x - 3y + z = b (1) () (1) #2 #3, (2)() (ii) " = -3 () (1) (2)(). (b)C-27 +34XY z 20 ' m + 39 F + ' NNN 11 2 in = 3z = -2 (3) 0 (4) 11. (2) XY 1 . y + z = 2 (E): 2x + y + z = 5,ab x - 3y + z = b (1) () (1) #2 #3, (2)() (ii) " = -3 () (1) (2)(). (b)C-27 +34XY z 20 ' m + 39 F + ' NNN 11 2 in = 3z = -2 (3) 0 (4)