Add 12/20 and 72/12
1st number: 12/20, 2nd number: 6 0/12
12/20 + 72/12 is 33/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
12/20 = 12 × 3/20 × 3 = 36/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
72/12 = 72 × 5/12 × 5 = 360/60 - Add the two like fractions:
36/60 + 360/60 = 36 + 360/60 = 396/60 - 396/60 simplified gives 33/5
- So, 12/20 + 72/12 = 33/5
In mixed form: 63/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+72/12 12/40+72/12 12/20+72/24 36/20+72/12 12/60+72/12 12/20+72/36 60/20+72/12 12/20+72/60 84/20+72/12 12/20+72/84