Add 7/10 and 21/14
1st number: 7/10, 2nd number: 1 7/14
7/10 + 21/14 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 14 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
7/10 = 7 × 7/10 × 7 = 49/70 - Likewise, for the 2nd fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Add the two like fractions:
49/70 + 105/70 = 49 + 105/70 = 154/70 - 154/70 simplified gives 11/5
- So, 7/10 + 21/14 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+21/14 7/10+42/14 7/20+21/14 7/10+21/28 21/10+21/14 7/10+63/14 7/30+21/14 7/10+21/42 35/10+21/14 7/50+21/14 7/10+21/70 49/10+21/14 7/70+21/14 7/10+21/98