Template:Fraction

This template builds nicer looking common fractions. It takes one, two or three parameters: the optional integer (maybe signed), the optional numerator and the required denominator; in this order.
 * : $a b/c$ (integer, numerator and denominator)
 * : $a b/c$ (numerator and denominator)
 * : $a/b$ (denominator only)

de:Vorlage:Bruch