$-1455-674$

$\left(-\frac{148}{31200}\right)+\left(\frac{83.5}{3307.5}\right)+\left(\frac{50.5}{1575}\right)+\left(\frac{16}{360}\right)+\left(\frac{62}{985.359375}\right)+\left(-\frac{3}{2450}\right)+\left(+\frac{2}{11088}\right)$

$\left(s^2-8s+16\right)\left(3s^2-14s+17\right)$

$cos\left(x\right)\:tan\left(x\right)+\:sin\left(x\right)\:cot\left(x\right)=\:sin\left(x\right)\:+\:cos^2\left(x\right)$

$\frac{3}{7}+\frac{5}{7}-\frac{1}{7}$

$\frac{y}{2}\:+\:-11\:=\:-13$