$\begin{array}{l}\phantom{\phantom{;}x\phantom{;}+1;}{\phantom{;}7x\phantom{;}-10\phantom{;}\phantom{;}}\\\phantom{;}x\phantom{;}+1\overline{\smash{)}\phantom{;}7x^{2}-3x\phantom{;}+5\phantom{;}\phantom{;}}\\\phantom{\phantom{;}x\phantom{;}+1;}\underline{-7x^{2}-7x\phantom{;}\phantom{-;x^n}}\\\phantom{-7x^{2}-7x\phantom{;};}-10x\phantom{;}+5\phantom{;}\phantom{;}\\\phantom{\phantom{;}x\phantom{;}+1-;x^n;}\underline{\phantom{;}10x\phantom{;}+10\phantom{;}\phantom{;}}\\\phantom{;\phantom{;}10x\phantom{;}+10\phantom{;}\phantom{;}-;x^n;}\phantom{;}15\phantom{;}\phantom{;}\\\end{array}$

$7x-10+\frac{15}{x+1}$