a dash
It is called a vinculum.
Vinculum is the name of the line between the numerator and the denominator.
The line between the numerator and denominator in a fraction is called the solidus. The vinculum, on the other hand, typically refers to a horizontal line used to indicate a repeating decimal or to group terms in mathematical expressions.
If the numerator is written above the denominator, the line is called the "bar". If the fraction is written in-line like 1/2, the line is called a "virgule".
whats the the line between fractions
When you write a division as one number above (or before) another, with a line between them, then the number on the top is the numerator. So, in the division x/y, x is the numerator. y is called the denominator.
The number above the line in a fraction is called the numerator. The number below the line is called the denominator. So in the fraction 5/7 5 is the numerator and 7 is the denominator.
It is called the fraction bar.
numerator
That is a vinculum.
The solidus line separates the numerator from the denominator in a fraction.
the line is called a division bar