1.  X + 3Y=9    3X-Y=72.  2X-5Y=10     4X-10Y=20INDICATE WHETHER THE MATRIX IS IN LOW-REDUCED FORM:1.  1 0 -12     0 1    2     00      02.   1 0 0   -1       0 1 0   -2       0 0 2    -33.  1 0 0   9      0 1 0    6     0 0 0      2     0 0 1      8

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