Add 60/81 and 25/80
60/81 + 25/80 is 455/432.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 80 is 6480
Next, find the equivalent fraction of both fractional numbers with denominator 6480 - For the 1st fraction, since 81 × 80 = 6480,
60/81 = 60 × 80/81 × 80 = 4800/6480 - Likewise, for the 2nd fraction, since 80 × 81 = 6480,
25/80 = 25 × 81/80 × 81 = 2025/6480 - Add the two like fractions:
4800/6480 + 2025/6480 = 4800 + 2025/6480 = 6825/6480 - 6825/6480 simplified gives 455/432
- So, 60/81 + 25/80 = 455/432
In mixed form: 123/432
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81+50/80 60/81+75/80