Add 20/14 and 5/21
1st number: 1 6/14, 2nd number: 5/21
20/14 + 5/21 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
20/14 = 20 × 3/14 × 3 = 60/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
5/21 = 5 × 2/21 × 2 = 10/42 - Add the two like fractions:
60/42 + 10/42 = 60 + 10/42 = 70/42 - 70/42 simplified gives 5/3
- So, 20/14 + 5/21 = 5/3
In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/14+5/21 20/14+10/21 20/28+5/21 20/14+5/42 60/14+5/21 20/14+15/21 20/42+5/21 20/14+5/63 20/14+25/21 20/70+5/21 20/14+35/21 20/98+5/21