Add 30/49 and 21/20
1st number: 30/49, 2nd number: 1 1/20
30/49 + 21/20 is 1629/980.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
30/49 = 30 × 20/49 × 20 = 600/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
21/20 = 21 × 49/20 × 49 = 1029/980 - Add the two like fractions:
600/980 + 1029/980 = 600 + 1029/980 = 1629/980 - So, 30/49 + 21/20 = 1629/980
In mixed form: 1649/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/49+21/20 30/49+42/20 30/98+21/20 30/49+21/40 90/49+21/20 30/49+63/20 30/49+21/60