October 2019 1 21 Report
1. 3x+4y-5z=12....(1)
2x+5y-z=17.....(2)
6x+2y-3z=17....(3)

2.x-y+2z=4....(1)
2x+2y-z=2....(2)
3x+y+2z=8....(3)

3.2x-2y-2z=9....(1)
x-6y-3z=28....(2)
3x+2y+z=16....(3)
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