Ответ:
[tex]7y - 6x = 26 \\ 7(12 + 5x) - 6x = 26 \\ 84 + 35x - 6x= 26 \\ 35x - 6x = 26 - 84 \\ 29x = - 58 \\ x = - 2 \\ y = 2[/tex]
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Ответ:
[tex]7y - 6x = 26 \\ 7(12 + 5x) - 6x = 26 \\ 84 + 35x - 6x= 26 \\ 35x - 6x = 26 - 84 \\ 29x = - 58 \\ x = - 2 \\ y = 2[/tex]