The extended coefficient matrix of the simultaneous equations y+x+7=0 z+y+8 = 0 Z+x+9= 0 is, (the...

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The extended coefficient matrix of the simultaneous equations y+x+7=0 z+y+8 = 0 Z+x+9= 0 is, (the order of unknowns is x, y, z) ? (1) 1 1 1 (3) ? Then, fill the blanks (1), (2) and (3) with some suitable integers or fractional numbers: The extended coefficient matrix of the simultaneous equations y+x+7=0 z+y+8 = 0 Z+x+9= 0 is, (the order of unknowns is x, y, z) ? (1) 1 1 1 (3) ? Then, fill the blanks (1), (2) and (3) with some suitable integers or fractional numbers:

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