Ответ:
[tex]7x - 2y = 2 \\ - 2x + 4y = 20 \\ \\ 7x - 2y = 2 \\ + \\ - x + 2y = 10 \\ \\ 6x = 12 \\ x = 2 \\ \\ - 2 + 2y = 10 \\ 2y = 12 \\ y = 6 \\ \\ (2 \: \: \: \: \: 6)[/tex]
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Ответ:
[tex]7x - 2y = 2 \\ - 2x + 4y = 20 \\ \\ 7x - 2y = 2 \\ + \\ - x + 2y = 10 \\ \\ 6x = 12 \\ x = 2 \\ \\ - 2 + 2y = 10 \\ 2y = 12 \\ y = 6 \\ \\ (2 \: \: \: \: \: 6)[/tex]