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

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

- ${\frac {A}{B}}$ + ${\frac {C}{D}}$ = ${\frac {AD+BC}{BD}}$
- ${\frac {A}{B}}$ - ${\frac {C}{D}}$ = ${\frac {AD-BC}{BD}}$
- ${\frac {A}{B}}$ x ${\frac {C}{D}}$ = ${\frac {AC}{BD}}$
- ${\frac {A}{B}}$ / ${\frac {C}{D}}$ = ${\frac {AD}{BC}}$, if C not zero.