Add 30/21 and 2/4
1st number: 1 9/21, 2nd number: 2/4
30/21 + 2/4 is 27/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
30/21 = 30 × 4/21 × 4 = 120/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
2/4 = 2 × 21/4 × 21 = 42/84 - Add the two like fractions:
120/84 + 42/84 = 120 + 42/84 = 162/84 - 162/84 simplified gives 27/14
- So, 30/21 + 2/4 = 27/14
In mixed form: 113/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/21+2/4 30/42+2/4 30/21+2/8 90/21+2/4 30/21+6/4 30/63+2/4 30/21+2/12 30/21+10/4 30/21+2/20 30/21+14/4 30/21+2/28