Add 72/15 and 15/30
1st number: 4 12/15, 2nd number: 15/30
72/15 + 15/30 is 53/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
72/15 = 72 × 2/15 × 2 = 144/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
15/30 = 15 × 1/30 × 1 = 15/30 - Add the two like fractions:
144/30 + 15/30 = 144 + 15/30 = 159/30 - 159/30 simplified gives 53/10
- So, 72/15 + 15/30 = 53/10
In mixed form: 53/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+15/30 72/15+15/60 72/15+45/30 72/45+15/30 72/15+15/90 72/15+75/30 72/75+15/30