$5x+4=7x-8$
$\left(1+\sin\left(x\right)\cos\left(x\right)\right).\left(\sin\left(x\right)-\cos\left(x\right)\right)$
$\lim_{x\to0}\left(\frac{2\sin\left(9x\right)}{x}\right)$
$x-2y+3z=11$
$\left(1x^6yz\right)^{15}$
$16+12-31-72+125+9$
$\int-x^2-1dx$
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