$\cos\left(70\right)=\frac{6}{x}$
$\frac{d^n}{dx^n}\left(y^3+x^3\right)$
$\frac{dy}{dx}=y^4-y^3+y^2-y=xe^{2x}+1$
$12x+12=13x+12$
$\int7abcdy$
$1+5x>5-3x$
$-8+-237$
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