Ответ:
[tex]3x + y = 13 \\ 5x - y = 27 \\ \\ 8x = 40 \\ x = 5 \\ y = - 2[/tex]
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Ответ:
[tex]3x + y = 13 \\ 5x - y = 27 \\ \\ 8x = 40 \\ x = 5 \\ y = - 2[/tex]