- ${{{(}{3}{x}{ }{-}{ }{y}{)}}}{^7}{ }{:}{ }{{{(}{y}{ }{-}{ }{3}{x}{)}}}{^2}{ }{=}{ }{-}{{{(}{3}{x}{ }{-}{ }{y}{)}}}{^5}$
- ${{{(}{x}{ }{-}{ }{y}{)}}}{^5}{ }{:}{ }{{{(}{x}{ }{-}{ }{y}{)}}}{^2}{ }{=}{ }{{{(}{x}{ }{-}{ }{y}{)}}}{^3}$
- ${{{(}{2}{x}{ }{-}{ }{3}{y}{)}}}{^9}{ }{:}{ }{{{(}{2}{x}{ }{-}{ }{3}{y}{)}}}{^6}{ }{=}{ }{{{(}{2}{x}{ }{-}{ }{3}{y}{)}}}{^3}$
- ${{(x - 2y)}}^{{50}}{{ : (x - 2y)}}^{{21}}{{ = (x - 2y)}}^{{29}}$