$4x\ge5x-7$
$4x-3x-6x$
$\lim_{x\to\infty}\left(\frac{x^3+x+2}{x^2+1}\right)$
$\int\left(x\left(ax^3-b\right)^4\right)dx$
$12x-3x+9x$
$\frac{1+\tanh}{\tanh}$
$\frac{d^2}{dx^2}\left(\frac{1-x}{x-3}\right)$
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