Add 21/14 and 10/20
1st number: 1 7/14, 2nd number: 10/20
21/14 + 10/20 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
21/14 = 21 × 10/14 × 10 = 210/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Add the two like fractions:
210/140 + 70/140 = 210 + 70/140 = 280/140 - 280/140 simplified gives 2/1
- So, 21/14 + 10/20 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+10/20 21/28+10/20 21/14+10/40 63/14+10/20 21/14+30/20 21/42+10/20 21/14+10/60 21/14+50/20 21/70+10/20 21/14+70/20 21/98+10/20