Add 84/15 and 21/60
1st number: 5 9/15, 2nd number: 21/60
84/15 + 21/60 is 119/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
84/15 = 84 × 4/15 × 4 = 336/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Add the two like fractions:
336/60 + 21/60 = 336 + 21/60 = 357/60 - 357/60 simplified gives 119/20
- So, 84/15 + 21/60 = 119/20
In mixed form: 519/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+42/60 84/30+21/60 84/15+63/60 84/45+21/60 84/75+21/60