Add 81/60 and 2/7
1st number: 1 21/60, 2nd number: 2/7
81/60 + 2/7 is 229/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
2/7 = 2 × 60/7 × 60 = 120/420 - Add the two like fractions:
567/420 + 120/420 = 567 + 120/420 = 687/420 - 687/420 simplified gives 229/140
- So, 81/60 + 2/7 = 229/140
In mixed form: 189/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/60+4/7 81/60+2/14 81/60+6/7 81/60+2/21 81/60+10/7 81/60+2/35 81/60+14/7 81/60+2/49