Add 30/10 and 21/7
1st number: 3 0/10, 2nd number: 3 0/7
30/10 + 21/7 is 6/1.
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,
30/10 = 30 × 7/10 × 7 = 210/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Add the two like fractions:
210/70 + 210/70 = 210 + 210/70 = 420/70 - 420/70 simplified gives 6/1
- So, 30/10 + 21/7 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10+21/7 30/10+42/7 30/20+21/7 30/10+21/14 90/10+21/7 30/10+63/7 30/50+21/7 30/10+21/35 30/70+21/7 30/10+21/49