$10x-3y=36$
$-7x^0y$
$25x+8\le3$
$36-132a-121a^2$
$\left(2x-y-4z\right)^2$
$89.30-10.70$
$\frac{x+2}{x-1}\ge\frac{2x-1}{x+2}-1$
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