$-5\cdot0-16$
$3x^2-x+1\cdot3x^2-x+1$
$\frac{2}{7}x^2z;\:x=3;\:z=1$
$\left(-\frac{2}{9}m^7n^4+\frac{4}{3}n^5p^6\right)^3$
$0.35\:x\:0.15$
$3x-7>2$
$m-3\le17$
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