Add 21/3 and 27/60
1st number: 7 0/3, 2nd number: 27/60
21/3 + 27/60 is 149/20.
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,
27/60 = 27 × 1/60 × 1 = 27/60 - Add the two like fractions:
420/60 + 27/60 = 420 + 27/60 = 447/60 - 447/60 simplified gives 149/20
- So, 21/3 + 27/60 = 149/20
In mixed form: 79/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+27/60 21/3+54/60 21/6+27/60 63/3+27/60 21/3+81/60 21/9+27/60 21/15+27/60