Add 21/72 and 3/24
21/72 + 3/24 is 5/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
3/24 = 3 × 3/24 × 3 = 9/72 - Add the two like fractions:
21/72 + 9/72 = 21 + 9/72 = 30/72 - 30/72 simplified gives 5/12
- So, 21/72 + 3/24 = 5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/72+3/24 21/72+6/24 21/72+3/48 63/72+3/24 21/72+9/24 21/72+3/72 21/72+15/24 21/72+21/24