Template:Frac

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)

$A/B$ $1/undefined$ $1/undefined$ $1/undefined$ $1/undefined$ $1/undefined$ $1/undefined$ $1/2$ $1/3$ $2/3$ $1/4$ $2/4$ $3/4$ $1/8$ $2/8$ $3/8$ $4/8$

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