## Pages

### Equivalent fractions

Equivalent fractions are obtained by dividing or multiplying the numerator and denominator of a fraction by the same number. If you divide the numerator and denominator of a fraction by the same number, it should be a common factor of the numerator and denominator. If you multiply the numerator and denominator of a fraction by the same number, then it can be any integer.

Dividing both numerator and denominator of 15/20 by 5, we get 3/4.
Multiplying both numerator and denominator of 15/20 by 2, we get 30/40.
Multiplying both numerator and denominator of 15/20 by 3, we get 45/60.
Therefore 3/4, 30/40 and 45/50 are equivalent fractions to 15/20.