Add 9/21 and 2/72
9/21 + 2/72 is 115/252.
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,
9/21 = 9 × 24/21 × 24 = 216/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
2/72 = 2 × 7/72 × 7 = 14/504 - Add the two like fractions:
216/504 + 14/504 = 216 + 14/504 = 230/504 - 230/504 simplified gives 115/252
- So, 9/21 + 2/72 = 115/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+2/72 9/21+4/72 9/42+2/72 27/21+2/72 9/21+6/72 9/63+2/72 45/21+2/72 9/21+10/72 63/21+2/72 9/21+14/72