Add 35/72 and 36/21
1st number: 35/72, 2nd number: 1 15/21
35/72 + 36/21 is 1109/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
35/72 = 35 × 7/72 × 7 = 245/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
36/21 = 36 × 24/21 × 24 = 864/504 - Add the two like fractions:
245/504 + 864/504 = 245 + 864/504 = 1109/504 - So, 35/72 + 36/21 = 1109/504
In mixed form: 2101/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72+36/21 35/72+72/21 35/72+36/42 35/72+36/63