Add 2/7 and 21/72
2/7 + 21/72 is 97/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
2/7 = 2 × 72/7 × 72 = 144/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Add the two like fractions:
144/504 + 147/504 = 144 + 147/504 = 291/504 - 291/504 simplified gives 97/168
- So, 2/7 + 21/72 = 97/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+21/72 2/7+42/72 2/14+21/72 6/7+21/72 2/7+63/72 2/21+21/72 10/7+21/72 2/35+21/72 14/7+21/72 2/49+21/72