Answers

Add 25/80 and 49/81

25/80 + 49/81 is 1189/1296.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 81 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 80 × 81 = 6480,
   25/80 = 25 × 81/80 × 81 = 2025/6480
3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
   49/81 = 49 × 80/81 × 80 = 3920/6480
4. Add the two like fractions:
   2025/6480 + 3920/6480 = 2025 + 3920/6480 = 5945/6480
5. 5945/6480 simplified gives 1189/1296
6. So, 25/80 + 49/81 = 1189/1296

MathStep (Works offline)

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

Related: ⁵⁰/₈₀+⁴⁹/₈₁ ²⁵/₈₀+⁹⁸/₈₁ ⁷⁵/₈₀+⁴⁹/₈₁

Add Fractions Calculator