Add 30/9 and 72/18
1st number: 3 3/9, 2nd number: 4 0/18
30/9 + 72/18 is 22/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
30/9 = 30 × 2/9 × 2 = 60/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Add the two like fractions:
60/18 + 72/18 = 60 + 72/18 = 132/18 - 132/18 simplified gives 22/3
- So, 30/9 + 72/18 = 22/3
In mixed form: 71/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/9+72/18 30/18+72/18 30/9+72/36 90/9+72/18 30/27+72/18 30/9+72/54 30/45+72/18 30/9+72/90 30/63+72/18