$3m+5m$
$\lim_{x\to0}\left(\frac{3x^2-2x+3}{4x^2+1}\right)$
$17y^6-4x^2\left(3y^3+x^2\right)+\left(3y^3+2x^2\right)^2$
$7x-49=0$
$-1234+567$
$5\left(w-7\right)$
$\left(-4x^4y^2z\right)\left(7x^2y\right)$
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