Add 21/12 and 60/35
1st number: 1 9/12, 2nd number: 1 25/35
21/12 + 60/35 is 97/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
60/35 = 60 × 12/35 × 12 = 720/420 - Add the two like fractions:
735/420 + 720/420 = 735 + 720/420 = 1455/420 - 1455/420 simplified gives 97/28
- So, 21/12 + 60/35 = 97/28
In mixed form: 313/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12+60/35 21/24+60/35 21/12+60/70 63/12+60/35 21/36+60/35 21/60+60/35 21/84+60/35