Add 3/36 and 21/15
1st number: 3/36, 2nd number: 1 6/15
3/36 + 21/15 is 89/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 15 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
3/36 = 3 × 5/36 × 5 = 15/180 - Likewise, for the 2nd fraction, since 15 × 12 = 180,
21/15 = 21 × 12/15 × 12 = 252/180 - Add the two like fractions:
15/180 + 252/180 = 15 + 252/180 = 267/180 - 267/180 simplified gives 89/60
- So, 3/36 + 21/15 = 89/60
In mixed form: 129/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/36+21/15 3/36+42/15 3/72+21/15 3/36+21/30 9/36+21/15 3/36+63/15 3/36+21/45 15/36+21/15 3/36+21/75 21/36+21/15