Add 21/28 and 98/60
1st number: 21/28, 2nd number: 1 38/60
21/28 + 98/60 is 143/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
21/28 = 21 × 15/28 × 15 = 315/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
98/60 = 98 × 7/60 × 7 = 686/420 - Add the two like fractions:
315/420 + 686/420 = 315 + 686/420 = 1001/420 - 1001/420 simplified gives 143/60
- So, 21/28 + 98/60 = 143/60
In mixed form: 223/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+98/60 21/56+98/60 63/28+98/60 21/84+98/60