$\left(\frac{6}{5\sqrt[3]{3x}}\right)\left(\frac{-5\sqrt[3]{3x}}{-5\sqrt[3]{3x}}\right)$

$53+77+14$

$-9+\left(8-2\cdot3\right)\cdot3-\left(-7\right)+12:\left(-2^2\right)$

$\lim_{x\to1}\left(\frac{x^{12}-1}{x^{16}-1}\right)$

$\int\left(\frac{sin\:x}{2cos\:x\:-\:4}\right)dx$

$3+\frac{1}{x}=\frac{10}{x^2}$

$72\cdot13$