Add 35/21 and 75/72
1st number: 1 14/21, 2nd number: 1 3/72
35/21 + 75/72 is 65/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
35/21 = 35 × 24/21 × 24 = 840/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504 - Add the two like fractions:
840/504 + 525/504 = 840 + 525/504 = 1365/504 - 1365/504 simplified gives 65/24
- So, 35/21 + 75/72 = 65/24
In mixed form: 217/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+75/72 35/42+75/72 35/63+75/72