Add 72/4 and 21/54
1st number: 18 0/4, 2nd number: 21/54
72/4 + 21/54 is 331/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
72/4 = 72 × 27/4 × 27 = 1944/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108 - Add the two like fractions:
1944/108 + 42/108 = 1944 + 42/108 = 1986/108 - 1986/108 simplified gives 331/18
- So, 72/4 + 21/54 = 331/18
In mixed form: 187/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4+42/54 72/8+21/54 72/4+63/54 72/12+21/54 72/20+21/54 72/28+21/54