Add 72/15 and 14/9
1st number: 4 12/15, 2nd number: 1 5/9
72/15 + 14/9 is 286/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
72/15 = 72 × 3/15 × 3 = 216/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
14/9 = 14 × 5/9 × 5 = 70/45 - Add the two like fractions:
216/45 + 70/45 = 216 + 70/45 = 286/45 - So, 72/15 + 14/9 = 286/45
In mixed form: 616/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+28/9 72/30+14/9 72/15+14/18 72/15+42/9 72/45+14/9 72/15+14/27 72/15+70/9 72/75+14/9 72/15+14/45 72/15+98/9 72/15+14/63