Arithmetic/Types of Numbers/Fraction

Fraction

Fraction is a ratio of two integer numbers. Fraction can be expressed mathematically

\frac{A}{B}, where B is not zero.

Where

A is called Numerator
B is called Denominator

Equal Fractions

\frac{A}{B} = \frac{C}{D} when A = C , B = D
\frac{A}{B} \frac{D}{D} = \frac{C}{D} \frac{B}{B} when AD = BC

Rules

  1. \frac{A}{B} + \frac{C}{D} = \frac{AD + BC}{BD}
  2. \frac{A}{B} - \frac{C}{D} = \frac{AD - BC}{BD}
  3. \frac{A}{B} x \frac{C}{D} = \frac{AC}{BD}
  4. \frac{A}{B} / \frac{C}{D} = \frac{AD}{BC}, if C not zero.
Last modified on 20 August 2011, at 18:59