Log11 (7-5x) = log11 (3+x) + 1 решить логарифмическое уравнение

Решение

Log₁₁ (7-5x) = log₁₁ (3+x) + 1

Log₁₁ (7-5x) = log₁₁ (3+x) + log₁₁ 11

Log₁₁ (7-5x) = log₁₁ (3+x) * 11

7 - 5x = (3+x) * 11

7 - 5x = 33 + 11x

11x + 5x = 7 - 33

16x = - 26

x = - 26/16

x = - 13/8

x = - 1,625