Questions on fractions, i.e. expressions (not values) of the form $\frac ab$, including arithmetic with fractions. Not to be confused with the tag (rational-numbers): fractions denote rational numbers, but the same rational number may be written in different ways as a fraction.
A fraction is simply an expression $\frac{a}{b}$, where $a$ and $b$ are typically integers. This tag may be used, when $a$ and $b$ are more general expressions or algebraic objects; however, consider using a more specific tag instead:
Fractions are distinct from rational numbers because they are a representation: $\frac 34$ and $\frac{30}{40}$ are different fractions that happen to represent the same rational number.