Add 28/81 and 75/60
1st number: 28/81, 2nd number: 1 15/60
28/81 + 75/60 is 517/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 60 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
28/81 = 28 × 20/81 × 20 = 560/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
75/60 = 75 × 27/60 × 27 = 2025/1620 - Add the two like fractions:
560/1620 + 2025/1620 = 560 + 2025/1620 = 2585/1620 - 2585/1620 simplified gives 517/324
- So, 28/81 + 75/60 = 517/324
In mixed form: 1193/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/81+75/60 84/81+75/60