$\sin\left(x-\pi\right)=\sin\left(x\right)$
$\cot\left(a\right)=3$
$\int x^3\cdot\sqrt{1+6x^4}dx$
$x+2y+7-9x-3y-12xy$
$\frac{r}{16}<1$
$\frac{-4\cdot6-\left(-8\right)}{-4}$
$\left(9b^2+d\right)^3$
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