Add 30/54 and 21/14
1st number: 30/54, 2nd number: 1 7/14
30/54 + 21/14 is 37/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 14 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
30/54 = 30 × 7/54 × 7 = 210/378 - Likewise, for the 2nd fraction, since 14 × 27 = 378,
21/14 = 21 × 27/14 × 27 = 567/378 - Add the two like fractions:
210/378 + 567/378 = 210 + 567/378 = 777/378 - 777/378 simplified gives 37/18
- So, 30/54 + 21/14 = 37/18
In mixed form: 21/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/54+21/14 30/54+42/14 30/54+21/28 90/54+21/14 30/54+63/14 30/54+21/42 30/54+21/70 30/54+21/98