Add 21/14 and 4/5
1st number: 1 7/14, 2nd number: 4/5
21/14 + 4/5 is 23/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
4/5 = 4 × 14/5 × 14 = 56/70 - Add the two like fractions:
105/70 + 56/70 = 105 + 56/70 = 161/70 - 161/70 simplified gives 23/10
- So, 21/14 + 4/5 = 23/10
In mixed form: 23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+4/5 21/14+8/5 21/28+4/5 21/14+4/10 63/14+4/5 21/14+12/5 21/42+4/5 21/14+4/15 21/14+20/5 21/70+4/5 21/14+4/25 21/14+28/5 21/98+4/5 21/14+4/35