Mathematics, 27.10.2020 14:00, dundiedoo7196

6r-s+ 3t = -9
5r + 5s - 5t= 20
3r-s+ 4t= -5

Answers: 1

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6r-s+ 3t = -9
5r + 5s - 5t= 20
3r-s+ 4t= -5...