Add 14/16 and 21/20
1st number: 14/16, 2nd number: 1 1/20
14/16 + 21/20 is 77/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
14/16 = 14 × 5/16 × 5 = 70/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
21/20 = 21 × 4/20 × 4 = 84/80 - Add the two like fractions:
70/80 + 84/80 = 70 + 84/80 = 154/80 - 154/80 simplified gives 77/40
- So, 14/16 + 21/20 = 77/40
In mixed form: 137/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/16+21/20 14/16+42/20 14/32+21/20 14/16+21/40 42/16+21/20 14/16+63/20 14/48+21/20 14/16+21/60 70/16+21/20 14/80+21/20 98/16+21/20