Add 3/72 and 60/21
1st number: 3/72, 2nd number: 2 18/21
3/72 + 60/21 is 487/168.
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,
3/72 = 3 × 7/72 × 7 = 21/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
60/21 = 60 × 24/21 × 24 = 1440/504 - Add the two like fractions:
21/504 + 1440/504 = 21 + 1440/504 = 1461/504 - 1461/504 simplified gives 487/168
- So, 3/72 + 60/21 = 487/168
In mixed form: 2151/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/72+60/21 3/72+60/42 9/72+60/21 3/72+60/63 15/72+60/21 21/72+60/21