Add 30/4 and 21/72
1st number: 7 2/4, 2nd number: 21/72
30/4 + 21/72 is 187/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
30/4 = 30 × 18/4 × 18 = 540/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Add the two like fractions:
540/72 + 21/72 = 540 + 21/72 = 561/72 - 561/72 simplified gives 187/24
- So, 30/4 + 21/72 = 187/24
In mixed form: 719/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4+21/72 30/4+42/72 30/8+21/72 90/4+21/72 30/4+63/72 30/12+21/72 30/20+21/72 30/28+21/72