Add 21/3 and 5/8
1st number: 7 0/3, 2nd number: 5/8
21/3 + 5/8 is 61/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 8 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 3 × 8 = 24,
21/3 = 21 × 8/3 × 8 = 168/24 - Likewise, for the 2nd fraction, since 8 × 3 = 24,
5/8 = 5 × 3/8 × 3 = 15/24 - Add the two like fractions:
168/24 + 15/24 = 168 + 15/24 = 183/24 - 183/24 simplified gives 61/8
- So, 21/3 + 5/8 = 61/8
In mixed form: 75/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+5/8 21/3+10/8 21/6+5/8 21/3+5/16 63/3+5/8 21/3+15/8 21/9+5/8 21/3+5/24 21/3+25/8 21/15+5/8 21/3+5/40 21/3+35/8 21/3+5/56