Page 140 - Math Grade 11 (Basic)
P. 140

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                                                  X+ y  = -6                  X+ 2y  =  5
                                              2.                        ~-
                                                 { 2x  y  =  2             { 3x-15  =  -6y




                        2x + 3 y + 2z  =  14       x+2y-3z = 10             - 2x + y + 3z  = 2
                   lli.   4x+2y-z =  15        h.   4x+y  z  = -10      G.   x-7y  3z=-4
                      {                                                    {
                                                   3x -7y + 2z  =  5
                         x+ y + 2z  =  8          1                         4x-2y-6z =  1






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