Ответ: -5,4
[tex] - 7x + 3 = 30 - 2x \\ - 7x + 2x = 30 - 3 \\ - 5x = 27 \\ x = - 5.4[/tex]
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Ответ: -5,4
[tex] - 7x + 3 = 30 - 2x \\ - 7x + 2x = 30 - 3 \\ - 5x = 27 \\ x = - 5.4[/tex]