Add 21/24 and 98/18
1st number: 21/24, 2nd number: 5 8/18
21/24 + 98/18 is 455/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
98/18 = 98 × 4/18 × 4 = 392/72 - Add the two like fractions:
63/72 + 392/72 = 63 + 392/72 = 455/72 - So, 21/24 + 98/18 = 455/72
In mixed form: 623/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+98/18 21/48+98/18 21/24+98/36 63/24+98/18 21/72+98/18 21/24+98/54 21/24+98/90