$-\frac{1}{2}y-\frac{1}{3}\le\frac{2}{3}$

$-6x^2-235=-48x+11$

$lny=x+3lnx$

$4x^2+3y^2+5y^2+x^2-3y^2$

$\ln\left(x-1\right)-\ln\left(x+1\right)=\ln\left(x+5\right)$

$\frac{\sin\left(x\right)+\cos\left(x\right)}{\tan\left(x\right)+\cot\left(x\right)}\:=\:\sin\left(x\right)+\cos\left(x\right)$

$5-\left(-1\right)\cdot\left(-3\right)$