$3x-7x+x$
$2x+1\:+\:2x-1$
$36y^2-108y+81$
$-\int\left(\sin\left(x\right)\cdot\left(\sec\left(x\right)\cdot\tan\left(x\right)\right)\right)dx$
$2x-1\le5x+14$
$29=a^3+b^3+c^3$
$\left(-432\right)-\left(1889\right)$
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