Add 36/9 and 21/15
1st number: 4 0/9, 2nd number: 1 6/15
36/9 + 21/15 is 27/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
36/9 = 36 × 5/9 × 5 = 180/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
21/15 = 21 × 3/15 × 3 = 63/45 - Add the two like fractions:
180/45 + 63/45 = 180 + 63/45 = 243/45 - 243/45 simplified gives 27/5
- So, 36/9 + 21/15 = 27/5
In mixed form: 52/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9+21/15 36/9+42/15 36/18+21/15 36/9+21/30 36/9+63/15 36/27+21/15 36/9+21/45 36/45+21/15 36/9+21/75 36/63+21/15