Add 21/3 and 35/60
1st number: 7 0/3, 2nd number: 35/60
21/3 + 35/60 is 91/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 3 × 20 = 60,
21/3 = 21 × 20/3 × 20 = 420/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
35/60 = 35 × 1/60 × 1 = 35/60 - Add the two like fractions:
420/60 + 35/60 = 420 + 35/60 = 455/60 - 455/60 simplified gives 91/12
- So, 21/3 + 35/60 = 91/12
In mixed form: 77/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+35/60 21/3+70/60 21/6+35/60 63/3+35/60 21/9+35/60 21/15+35/60