Условие:

1) log3(x) + log9(x) + log27(x)=11/12;

2) log3(x) + log корень 3(x) + log1/3(х) = 6;

3) log3(x) * log2(x) = 4log3(2);

4) log5(x) * log3(x) = 9 log5(3).