Add 21/3 and 45/8
1st number: 7 0/3, 2nd number: 5 5/8
21/3 + 45/8 is 101/8.
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,
45/8 = 45 × 3/8 × 3 = 135/24 - Add the two like fractions:
168/24 + 135/24 = 168 + 135/24 = 303/24 - 303/24 simplified gives 101/8
- So, 21/3 + 45/8 = 101/8
In mixed form: 125/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3+45/8 21/3+90/8 21/6+45/8 21/3+45/16 63/3+45/8 21/9+45/8 21/3+45/24 21/15+45/8 21/3+45/40 21/3+45/56