Add 72/18 and 25/9
1st number: 4 0/18, 2nd number: 2 7/9
72/18 + 25/9 is 61/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 18 × 1 = 18,
72/18 = 72 × 1/18 × 1 = 72/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
25/9 = 25 × 2/9 × 2 = 50/18 - Add the two like fractions:
72/18 + 50/18 = 72 + 50/18 = 122/18 - 122/18 simplified gives 61/9
- So, 72/18 + 25/9 = 61/9
In mixed form: 67/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/18+50/9 72/36+25/9 72/18+25/18 72/18+75/9 72/54+25/9 72/18+25/27 72/90+25/9 72/18+25/45 72/18+25/63