Add 20/10 and 21/3
1st number: 2 0/10, 2nd number: 7 0/3
20/10 + 21/3 is 9/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
20/10 = 20 × 3/10 × 3 = 60/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
21/3 = 21 × 10/3 × 10 = 210/30 - Add the two like fractions:
60/30 + 210/30 = 60 + 210/30 = 270/30 - 270/30 simplified gives 9/1
- So, 20/10 + 21/3 = 9/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10+21/3 20/10+42/3 20/10+21/6 60/10+21/3 20/10+63/3 20/30+21/3 20/10+21/9 20/50+21/3 20/10+21/15 20/70+21/3