$4x+16+2x=46$
$2x+2y-3z=1$
$\ln\left(7x-6\right)=0$
$2tan\:y+sec^2y$
$f\left(x\right)=2x^3\left(2x^4-5x\right)$
$\lim_{x\to-3}\left(4x^2+12x\right)$
$3x^4+2x^2+1+2x^4-3x^3+3x-6$
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