$$\frac{15}{v}$$  

$$20v$$  

$$20v^5$$  

$$15v^5$$  

$$\frac{18}{n}$$  

$$\frac{12}{n^9}$$  

$$18n^7$$  

$$10n^2$$  

$$24x^3$$  

$$\frac{2}{x^3}$$  

$$\frac{15}{x^3}$$  

$$6x^3$$  

$$\frac{3}{r^2}$$  

$$\frac{3r}{2}$$  

$$\frac{5r^4}{4}$$  

$$\frac{5r^3}{4}$$  

$$\frac{3}{2x^4}$$  

$$\frac{6}{5x^{11}}$$  

$$\frac{1}{2x^3}$$  

$$\frac{6x^2}{5}$$  

$$\frac{3x^4}{2}$$  

$$x^9$$  

$$\frac{5x^9}{2}$$  

$$\frac{1}{3x^2}$$  

$$n^4$$  

$$\frac{1}{3n^{10}}$$  

$$\frac{4}{3n^4}$$  

$$4n^3$$  

$$8x^{15}$$  

$$25x^6$$  

$$9x^4$$  

$$\frac{1}{3125x^5}$$  

$$\frac{1}{243p^{25}}$$  

$$125p^{18}$$  

$$\frac{1}{p^8}$$  

$$p^{18}$$

$$16p^{10}$$  

$$\frac{1}{8p^9}$$  

$$\frac{8}{p^9}$$  

$$243p^{10}$$  

$$\frac{36}{n^{10}}$$  

$$\frac{1}{n^4}$$  

$$\frac{32}{n^{15}}$$  

$$256n^8$$