$70>y+40$
$6\left(-4+15\right)$
$x+\frac{4}{x}=1$
$\left(7-8m^2\right)\left(6m^2+3a\right)$
$\frac{d}{dx}3x-5$
$\int8x^7\left(x^8-11\right)dx$
$64a^8-49b^4$
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