$3x+y-5-x+4y-1$
$\left[\left(ab3\right)\right]^2$
$\left(3y-3x\right)\left(3y+5\right)$
$\lim_{x\to0}\left(\frac{\ln\left(1+x\right)-\sin\left(x\right)}{\sin\left(x\right)}\right)$
$5\left(m+9\right)+4+8m$
$x+6+x+14$
$\left(\frac{-4x^2}{2x}\right)^3$
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