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5. Уравнения \ Тип 2


\(\DeclareMathOperator{\tg}{tg}\)\(\DeclareMathOperator{\ctg}{ctg}\)\(\DeclareMathOperator{\arctg}{arctg}\)\(\DeclareMathOperator{\arcctg}{arcctg}\)
Найдите корень уравнения

\(\left(\dfrac{1}{7}\right)^{x-10}=7^{-7x+10}\)