$3,01\:.\:10\left(-7\right)$

$\lim_{x\to1}\left(\frac{\ln\left(x-1\right)}{\ln\left(sin\left(x-1\right)\right)}\right)$

$-\:\left[45\::\:\left(\:-\:5\:\right)\:+\:3\:.\:\left(7\:-\:2\:\right)\right]\:+\:8\:$

$c\:+\:c\:+\:c\:+\:c\:-\:8c$

$\left(3c+5m\right)^2$

$\frac{dy}{dx}+\frac{y}{x}\:=\:\frac{sin\left(x\right)}{x}$

$-58-26+\left(-12\right)-\left(-15\right)+\left(-15\right)$