$y=\frac{\left(50+15x\right)}{15}$

$cot\:=2$

$\lim_{x\to\infty}2\left(1+\left(\frac{1}{x+4}\right)\right)^{8x+2}$

$-70-20-90$

$\left(+12\right)-\left(-14\right)+\left(+15\right)$

$-5\:x\:14$

$\frac{2}{3}m^3+\frac{1}{2}m^2n-\frac{5}{6}mn2-\frac{1}{9}\cdot\frac{3}{4}m^2n^3$