Add 72/15 and 6/18
1st number: 4 12/15, 2nd number: 6/18
72/15 + 6/18 is 77/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
72/15 = 72 × 6/15 × 6 = 432/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
6/18 = 6 × 5/18 × 5 = 30/90 - Add the two like fractions:
432/90 + 30/90 = 432 + 30/90 = 462/90 - 462/90 simplified gives 77/15
- So, 72/15 + 6/18 = 77/15
In mixed form: 52/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+12/18 72/30+6/18 72/15+6/36 72/45+6/18 72/15+6/54 72/15+30/18 72/75+6/18 72/15+6/90 72/15+42/18