$+3n+2+9n$
$x^2y-2xy+1-3^2y+\frac{1}{2}$
$\frac{1}{729}x^{15}-\frac{1}{1331}y^{18}$
$-4h\:=\:-16$
$732+104$
$\sin\left(x\right)=0.9$
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