Add 72/20 and 36/15
1st number: 3 12/20, 2nd number: 2 6/15
72/20 + 36/15 is 6/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
72/20 = 72 × 3/20 × 3 = 216/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
36/15 = 36 × 4/15 × 4 = 144/60 - Add the two like fractions:
216/60 + 144/60 = 216 + 144/60 = 360/60 - 360/60 simplified gives 6/1
- So, 72/20 + 36/15 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+72/15 72/40+36/15 72/20+36/30 72/60+36/15 72/20+36/45 72/20+36/75