$\frac{55}{-5}\left(-5\right)\left(2\right)\left(4\right)$

$\left(0.4m+1.2n-2.3p\right)+\left(3.2n-4.7p-0.4m\right)$

$\frac{z^{-5}}{z^3}$

$6\:-7\:-1\:17$

$\log\left(x-2\right)-\frac{1}{2}\log\left(3x-6\right)=\log\left(2\right)$

$3x^2-6x+6$

$\log\left(x+8\right)-\log\left(3\right)=\log\left(x\right)$