Add 1/72 and 21/4
1st number: 1/72, 2nd number: 5 1/4
1/72 + 21/4 is 379/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 4 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
1/72 = 1 × 1/72 × 1 = 1/72 - Likewise, for the 2nd fraction, since 4 × 18 = 72,
21/4 = 21 × 18/4 × 18 = 378/72 - Add the two like fractions:
1/72 + 378/72 = 1 + 378/72 = 379/72 - So, 1/72 + 21/4 = 379/72
In mixed form: 519/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72+21/4 1/72+42/4 1/72+21/8 3/72+21/4 1/72+63/4 1/72+21/12 5/72+21/4 1/72+21/20 7/72+21/4 1/72+21/28