Add 18/9 and 72/18
1st number: 2 0/9, 2nd number: 4 0/18
18/9 + 72/18 is 6/1.
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,
18/9 = 18 × 2/9 × 2 = 36/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Add the two like fractions:
36/18 + 72/18 = 36 + 72/18 = 108/18 - 108/18 simplified gives 6/1
- So, 18/9 + 72/18 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/9+72/18 18/9+72/36 54/9+72/18 18/27+72/18 18/9+72/54 90/9+72/18 18/45+72/18 18/9+72/90 18/63+72/18