Mathematics, 18.12.2020 06:30 darkremnant14

9 x + 12 y – 39 z = 6
12 x + 20 y – 68 z = –8
–6 x – 12 y + 42 z = 12

Answers: 3

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9 x + 12 y – 39 z = 6
12 x + 20 y – 68 z = –8
–6 x – 12 y + 42 z = 12...