Add 84/60 and 25/81
1st number: 1 24/60, 2nd number: 25/81
84/60 + 25/81 is 692/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
84/60 = 84 × 27/60 × 27 = 2268/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
25/81 = 25 × 20/81 × 20 = 500/1620 - Add the two like fractions:
2268/1620 + 500/1620 = 2268 + 500/1620 = 2768/1620 - 2768/1620 simplified gives 692/405
- So, 84/60 + 25/81 = 692/405
In mixed form: 1287/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/60+50/81 84/60+75/81