Add 72/15 and 12/30
1st number: 4 12/15, 2nd number: 12/30
72/15 + 12/30 is 26/5.
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,
12/30 = 12 × 1/30 × 1 = 12/30 - Add the two like fractions:
144/30 + 12/30 = 144 + 12/30 = 156/30 - 156/30 simplified gives 26/5
- So, 72/15 + 12/30 = 26/5
In mixed form: 51/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+24/30 72/30+12/30 72/15+12/60 72/15+36/30 72/45+12/30 72/15+12/90 72/15+60/30 72/75+12/30 72/15+84/30