Add 3/14 and 21/72
3/14 + 21/72 is 85/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
3/14 = 3 × 36/14 × 36 = 108/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Add the two like fractions:
108/504 + 147/504 = 108 + 147/504 = 255/504 - 255/504 simplified gives 85/168
- So, 3/14 + 21/72 = 85/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/14+21/72 3/14+42/72 3/28+21/72 9/14+21/72 3/14+63/72 3/42+21/72 15/14+21/72 3/70+21/72 21/14+21/72 3/98+21/72