$5x+20=100$
$\sqrt[7]{x^{\left[3\right]}}+\frac{3}{x^{\left[6\right]}}-5x^{\left[3\right]}$
$26x=52$
$x^2=\frac{9}{2}x$
$\frac{1}{2}-\frac{7}{9x}=\frac{4}{9}-\frac{1}{6x}$
$\sqrt{t}\frac{dx}{dt}-xt=0$
$4ab-3bc$
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