# Denominator

bottom of a fraction

In math, the bottom part of a fraction is called the denominator. A denominator cannot be zero. If the line part of the fraction is flat, the denominator is on the bottom. If the line part is at a slant, the denominator is on the right.The upper part is called the numerator of the fraction. For example:

• In ${\displaystyle 3/4}$ the denominator is "4".
• In ${\displaystyle 23+76/100}$ the denominator is "100".
• In ${\displaystyle 15/(35+7)}$ the denominator is "(35+7)".
• In ${\displaystyle a/(6b+c)}$, the denominator is "(6b + c)".