Add 6/20 and 21/30
6/20 + 21/30 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
6/20 = 6 × 3/20 × 3 = 18/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Add the two like fractions:
18/60 + 42/60 = 18 + 42/60 = 60/60 - 60/60 simplified gives 1/1
- So, 6/20 + 21/30 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/20+21/30 6/20+42/30 6/40+21/30 6/20+21/60 18/20+21/30 6/20+63/30 6/60+21/30 6/20+21/90 30/20+21/30 42/20+21/30