Add 30/2 and 21/18
1st number: 15 0/2, 2nd number: 1 3/18
30/2 + 21/18 is 97/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
30/2 = 30 × 9/2 × 9 = 270/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Add the two like fractions:
270/18 + 21/18 = 270 + 21/18 = 291/18 - 291/18 simplified gives 97/6
- So, 30/2 + 21/18 = 97/6
In mixed form: 161/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/2+21/18 30/2+42/18 30/4+21/18 30/2+21/36 90/2+21/18 30/2+63/18 30/6+21/18 30/2+21/54 30/10+21/18 30/2+21/90 30/14+21/18