Add 72/30 and 9/12
1st number: 2 12/30, 2nd number: 9/12
72/30 + 9/12 is 63/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
72/30 = 72 × 2/30 × 2 = 144/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Add the two like fractions:
144/60 + 45/60 = 144 + 45/60 = 189/60 - 189/60 simplified gives 63/20
- So, 72/30 + 9/12 = 63/20
In mixed form: 33/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+18/12 72/60+9/12 72/30+9/24 72/30+27/12 72/90+9/12 72/30+9/36 72/30+45/12 72/30+9/60 72/30+63/12 72/30+9/84