Add 4/36 and 21/15
1st number: 4/36, 2nd number: 1 6/15
4/36 + 21/15 is 68/45.
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,
4/36 = 4 × 5/36 × 5 = 20/180 - Likewise, for the 2nd fraction, since 15 × 12 = 180,
21/15 = 21 × 12/15 × 12 = 252/180 - Add the two like fractions:
20/180 + 252/180 = 20 + 252/180 = 272/180 - 272/180 simplified gives 68/45
- So, 4/36 + 21/15 = 68/45
In mixed form: 123/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/36+21/15 4/36+42/15 4/72+21/15 4/36+21/30 12/36+21/15 4/36+63/15 4/36+21/45 20/36+21/15 4/36+21/75 28/36+21/15