Add 81/60 and 2/28
1st number: 1 21/60, 2nd number: 2/28
81/60 + 2/28 is 199/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 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 28 × 15 = 420,
2/28 = 2 × 15/28 × 15 = 30/420 - Add the two like fractions:
567/420 + 30/420 = 567 + 30/420 = 597/420 - 597/420 simplified gives 199/140
- So, 81/60 + 2/28 = 199/140
In mixed form: 159/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/60+4/28 81/60+2/56 81/60+6/28 81/60+2/84 81/60+10/28 81/60+14/28