Question

log9(11x-12)=3log(9) 10

Answer 1

log₉(11x-12) = 3log₉10

log₉(11x-12) = log₉10³

ОДЗ: 11х - 12>0

x > $1\frac{1}{11}$

11х - 12 = 10³

11х - 12 = 1000

11х = 1000 + 12

11х = 1012

х = 1012 : 11

х = 92

Ответ: 92