$x+12=3x+20$
$\cos\left(0\right)\frac{4}{7}$
$4764-20077.2$
$\sqrt{5\sqrt{25}}$
$1-\left(7^3\right)$
$\frac{x^4+2x^3-10}{x-3}$
$\cos=\frac{12}{5}$
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