$x+3+2x-b+x-4$
$7x^2+19x-6$
$9t^2\:+\:37t\:+4$
$2\pi\int_0^8\left(x^3\right)dx$
$45-\left(-32\right)+\left(-12\right)-7$
$2-6+4-9$
$\left(\frac{\frac{2x}{3}-1}{4}\right)<3$
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