$\log x=\log\left(x-5\right)+\log\left(6\right)$

$\frac{d}{dx}\left(x^2-5xy+12\frac{x^2}{y}+15y=0\right)$

$2x-3=5$

$\frac{d}{dx}5x^2-12$

$\frac{2}{3}a^3-\frac{2}{4}a^2b+\frac{4}{5}b^2+\frac{3}{2}a^3-\frac{5}{6}b^2+\frac{5}{4}a^2b$

$\int\tanh\left(\frac{x}{7}\right)dx$

$e^y\cdot\cos\left(x\right)+\cos\left(x\right)+\left(e^y\cdot\sin\left(x\right)+e^y\right)\cdot\frac{dy}{dx}=0$