Question

lg(11-3x) < 2-lg5


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Answer 1

ОДЗ: 11-3x>0, 3x<11, x<11/3
lg(11-3x)<2lg(10)-lg5
lg(11-3x)<lg(100/5)
11-3x<20
3x>-9
x>-3
Ответ: х∈(-3;11/3)