$\frac{a+7}{3}=5$

$\int x.y\:dy$

$ln\left(x\sqrt[2]{1-x^2}\right)$

$\int_0^{\frac{0.111}{2}}\left(\frac{209}{9000}\:+\:\left(-0.023-\frac{209}{9000}\right)e^{-\frac{t}{0.000001}}\right)^2dt$

$\frac{3x^3-10x+1}{x+2}$

$\:-\frac{32}{-4}\left(-4\right)$

$\left(\frac{5}{4}a+b+\frac{2}{7}c\right)-\left(9a-\frac{6}{5}b+\frac{7}{2}c\right)$