Add 21/4 and 9/27
1st number: 5 1/4, 2nd number: 9/27
21/4 + 9/27 is 67/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
21/4 = 21 × 27/4 × 27 = 567/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
9/27 = 9 × 4/27 × 4 = 36/108 - Add the two like fractions:
567/108 + 36/108 = 567 + 36/108 = 603/108 - 603/108 simplified gives 67/12
- So, 21/4 + 9/27 = 67/12
In mixed form: 57/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+9/27 21/4+18/27 21/8+9/27 21/4+9/54 63/4+9/27 21/12+9/27 21/4+9/81 21/4+45/27 21/20+9/27 21/4+63/27 21/28+9/27