$2\sin\left(x\right)\tan\left(x\right)-\sin\left(x\right)=0$

$5+\left(-1+9\right)-\left\{-3+\left[-5+11-\left(-4-3\right)+5\right]-13\right\}+4-5$

$\frac{7}{1-sin\left(x\right)}+\frac{7}{1+sin\left(x\right)}$

$3y+6x-5y$

$\left(-2.0\right)+\left(-7.3\right)$

$2+10+1+9m-3m+8$

$2log\left(x+3\right)+3log\left(x-2\right)$