Add 7/15 and 72/20
1st number: 7/15, 2nd number: 3 12/20
7/15 + 72/20 is 61/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
7/15 = 7 × 4/15 × 4 = 28/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
72/20 = 72 × 3/20 × 3 = 216/60 - Add the two like fractions:
28/60 + 216/60 = 28 + 216/60 = 244/60 - 244/60 simplified gives 61/15
- So, 7/15 + 72/20 = 61/15
In mixed form: 41/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15+72/20 7/30+72/20 7/15+72/40 21/15+72/20 7/45+72/20 7/15+72/60 35/15+72/20 7/75+72/20 49/15+72/20