Add 2/20 and 21/15
1st number: 2/20, 2nd number: 1 6/15
2/20 + 21/15 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
2/20 = 2 × 3/20 × 3 = 6/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
21/15 = 21 × 4/15 × 4 = 84/60 - Add the two like fractions:
6/60 + 84/60 = 6 + 84/60 = 90/60 - 90/60 simplified gives 3/2
- So, 2/20 + 21/15 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20+21/15 2/20+42/15 2/40+21/15 2/20+21/30 6/20+21/15 2/20+63/15 2/60+21/15 2/20+21/45 10/20+21/15 2/20+21/75 14/20+21/15