Add 14/20 and 21/8
1st number: 14/20, 2nd number: 2 5/8
14/20 + 21/8 is 133/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
14/20 = 14 × 2/20 × 2 = 28/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
21/8 = 21 × 5/8 × 5 = 105/40 - Add the two like fractions:
28/40 + 105/40 = 28 + 105/40 = 133/40 - So, 14/20 + 21/8 = 133/40
In mixed form: 313/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/20+21/8 14/20+42/8 14/40+21/8 14/20+21/16 42/20+21/8 14/20+63/8 14/60+21/8 14/20+21/24 70/20+21/8 14/20+21/40 98/20+21/8 14/20+21/56