$\frac{1-2-2-3}{6}$

$\left(7a^3y^4+6m^3x^6\right)^2$

$\int\frac{1}{6\sqrt{36+x^2}}dx$

$\sqrt[4]{\sqrt[2]{a^{24}}}$

$\frac{\sin\left(x\right)}{1+\sec\left(x\right)}=\frac{\sin\left(x\right)\cos\left(x\right)}{\cos\left(x\right)+1}$

$\frac{1+\cos\left(a\right)}{\sin\left(a\right)}+\tan\left(a\right)=\frac{1+\cos\left(a\right)}{\sin\left(a\right)\cos\left(a\right)}$

$9\left(5\right)-3\left(-3\right)+\left(-1\right)$