Add 3/10 and 21/7
1st number: 3/10, 2nd number: 3 0/7
3/10 + 21/7 is 33/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
3/10 = 3 × 7/10 × 7 = 21/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Add the two like fractions:
21/70 + 210/70 = 21 + 210/70 = 231/70 - 231/70 simplified gives 33/10
- So, 3/10 + 21/7 = 33/10
In mixed form: 33/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/10+21/7 3/10+42/7 3/20+21/7 3/10+21/14 9/10+21/7 3/10+63/7 3/30+21/7 15/10+21/7 3/50+21/7 3/10+21/35 21/10+21/7 3/70+21/7 3/10+21/49