Add 72/36 and 21/24
1st number: 2 0/36, 2nd number: 21/24
72/36 + 21/24 is 23/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
72/36 = 72 × 2/36 × 2 = 144/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Add the two like fractions:
144/72 + 63/72 = 144 + 63/72 = 207/72 - 207/72 simplified gives 23/8
- So, 72/36 + 21/24 = 23/8
In mixed form: 27/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/36+42/24 72/36+21/48 72/36+63/24 72/36+21/72