Ответ:
7)
[tex]x = \frac{1}{3} y + 9[/tex]
[tex] \frac{1}{3} y + 9 = x[/tex]
[tex]y + 27 = 3x[/tex]
[tex]y = 3x - 27[/tex]
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Ответ:
7)
[tex]x = \frac{1}{3} y + 9[/tex]
[tex] \frac{1}{3} y + 9 = x[/tex]
[tex]y + 27 = 3x[/tex]
[tex]y = 3x - 27[/tex]