A fraction is a mathematical expression that represents the division of one quantity by another. It is composed of two parts: the numerator and the denominator. The numerator is the number above the line (or before the slash), which indicates how many parts we have. The denominator is the number below the line (or after the slash), representing the total number of equal parts that make up a whole.
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A fraction represents the quotient of its numerator by its nonzero denominator . For integers this is a rational number. Different fractions can represent the same number: . Dividing both entries by their greatest common divisor gives a reduced fraction, with the sign convention that the denominator is positive.
