Add 72/60 and 81/12
1st number: 1 12/60, 2nd number: 6 9/12
72/60 + 81/12 is 159/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
72/60 = 72 × 1/60 × 1 = 72/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Add the two like fractions:
72/60 + 405/60 = 72 + 405/60 = 477/60 - 477/60 simplified gives 159/20
- So, 72/60 + 81/12 = 159/20
In mixed form: 719/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/60+81/24 72/60+81/36 72/60+81/60 72/60+81/84