Add 72/15 and 35/20
1st number: 4 12/15, 2nd number: 1 15/20
72/15 + 35/20 is 131/20.
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,
72/15 = 72 × 4/15 × 4 = 288/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
35/20 = 35 × 3/20 × 3 = 105/60 - Add the two like fractions:
288/60 + 105/60 = 288 + 105/60 = 393/60 - 393/60 simplified gives 131/20
- So, 72/15 + 35/20 = 131/20
In mixed form: 611/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+70/20 72/30+35/20 72/15+35/40 72/45+35/20 72/15+35/60 72/75+35/20