Answers

Add 75/25 and 20/80

1^st number: 3 0/25, 2^nd number: 20/80

75/25 + 20/80 is 13/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 25 × 16 = 400,
   75/25 = 75 × 16/25 × 16 = 1200/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   20/80 = 20 × 5/80 × 5 = 100/400
4. Add the two like fractions:
   1200/400 + 100/400 = 1200 + 100/400 = 1300/400
5. 1300/400 simplified gives 13/4
6. So, 75/25 + 20/80 = 13/4
   In mixed form: 31/4

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁷⁵/₂₅+⁴⁰/₈₀ ⁷⁵/₅₀+²⁰/₈₀ ⁷⁵/₂₅+⁶⁰/₈₀

Add Fractions Calculator