Add 27/72 and 48/21
1st number: 27/72, 2nd number: 2 6/21
27/72 + 48/21 is 149/56.
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,
27/72 = 27 × 7/72 × 7 = 189/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
48/21 = 48 × 24/21 × 24 = 1152/504 - Add the two like fractions:
189/504 + 1152/504 = 189 + 1152/504 = 1341/504 - 1341/504 simplified gives 149/56
- So, 27/72 + 48/21 = 149/56
In mixed form: 237/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/72+48/21 27/72+96/21 27/72+48/42 81/72+48/21 27/72+48/63