$-1701:\left(-63\right)$

$\log\left(x\right)+9\log\left(y\right)$

$\left|-3-\left(1-6\right)+5\right|-8-\left(9-2\right)$

$\frac{125}{38}\:m^6n^7-\frac{12}{75}mn^2$

$\frac{5x^{2}-2x+1}{x+1}$

$\left(\frac{7}{0.054}\right)-1\cdot100$

$\left(9ab\right)-\left(-ab\right)$