Ответ:
[tex] \sqrt[]{14 + 7x} = 7 \\ 14 + 7x = 49 \\ 7x = 35 \\ x = 5[/tex]
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Ответ:
[tex] \sqrt[]{14 + 7x} = 7 \\ 14 + 7x = 49 \\ 7x = 35 \\ x = 5[/tex]