Add 72/20 and 20/60
1st number: 3 12/20, 2nd number: 20/60
72/20 + 20/60 is 59/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 60 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 60 × 1 = 60,
20/60 = 20 × 1/60 × 1 = 20/60 - Add the two like fractions:
216/60 + 20/60 = 216 + 20/60 = 236/60 - 236/60 simplified gives 59/15
- So, 72/20 + 20/60 = 59/15
In mixed form: 314/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+40/60 72/40+20/60 72/60+20/60