Add 12/60 and 21/15
1st number: 12/60, 2nd number: 1 6/15
12/60 + 21/15 is 8/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
12/60 = 12 × 1/60 × 1 = 12/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
21/15 = 21 × 4/15 × 4 = 84/60 - Add the two like fractions:
12/60 + 84/60 = 12 + 84/60 = 96/60 - 96/60 simplified gives 8/5
- So, 12/60 + 21/15 = 8/5
In mixed form: 13/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/60+21/15 12/60+42/15 12/60+21/30 36/60+21/15 12/60+63/15 12/60+21/45 12/60+21/75 84/60+21/15