![7)\ \ 3^{3x-4}\leq 27\ \ ,\ \ \ 3^{3x-4}\leq 3^3\ \ \ \Rightarrow \ \ \ \ 3x-4\leq 3\ \ ,\\\\3x\leq 7\ \ ,\ \ x\leq \frac{7}{3}\ \ ,\ \ x\leq 2\frac{1}{3}\\\\x\in (-\infty ;2\frac{1}{3}\ ]](https://tex.z-dn.net/?f=7%29%5C%20%5C%203%5E%7B3x-4%7D%5Cleq%2027%5C%20%5C%20%2C%5C%20%5C%20%5C%203%5E%7B3x-4%7D%5Cleq%203%5E3%5C%20%5C%20%5C%20%5CRightarrow%20%5C%20%5C%20%5C%20%5C%203x-4%5Cleq%203%5C%20%5C%20%2C%5C%5C%5C%5C3x%5Cleq%207%5C%20%5C%20%2C%5C%20%5C%20x%5Cleq%20%5Cfrac%7B7%7D%7B3%7D%5C%20%5C%20%2C%5C%20%5C%20x%5Cleq%202%5Cfrac%7B1%7D%7B3%7D%5C%5C%5C%5Cx%5Cin%20%28-%5Cinfty%20%3B2%5Cfrac%7B1%7D%7B3%7D%5C%20%5D "7)\ \ 3^{3x-4}\leq 27\ \ ,\ \ \ 3^{3x-4}\leq 3^3\ \ \ \Rightarrow \ \ \ \ 3x-4\leq 3\ \ ,\\\\3x\leq 7\ \ ,\ \ x\leq \frac{7}{3}\ \ ,\ \ x\leq 2\frac{1}{3}\\\\x\in (-\infty ;2\frac{1}{3}\ ]")
0\\x>0\end{array}\right\ \left\{\begin{array}{ccc}x>1\\x>0\end{array}\right\ \ x>1\\\\0" alt="8)\ \ log_{1/2}(2x-2)\leq log_{1/2}x\ \ ,\ \ \ ODZ:\ \left\{\begin{array}{l}2x-2>0\\x>0\end{array}\right\ \left\{\begin{array}{ccc}x>1\\x>0\end{array}\right\ \ x>1\\\\0" align="absmiddle" class="latex-formula">
1\ \ \ \to \ \ \ x^2+6" alt="9)\ \ log_3(x^2+6)0\\\\a=3>1\ \ \ \to \ \ \ x^2+6" align="absmiddle" class="latex-formula">