(f)
return f.per(f.num, f.den)
Remove common factors from ``f.num`` and ``f.den``.
Remove common factors from ``f.num`` and ``f.den``.
Remove common factors from f . num and f . den .
def cancel(f):
        """Remove common factors from ``f.num`` and ``f.den``. """
        return f.per(f.num, f.den)
def cancel ( f ) : return f . per ( f . num , f . den )