Ответ: -5
[tex]20x + 8 = 17x - 7 \\ 20x - 17x = - 7 - 8 \\ 3x = - 15 \\ x = - 5[/tex]
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Ответ: -5
[tex]20x + 8 = 17x - 7 \\ 20x - 17x = - 7 - 8 \\ 3x = - 15 \\ x = - 5[/tex]
Відповідь: -5