Add 9/30 and 28/12
1st number: 9/30, 2nd number: 2 4/12
9/30 + 28/12 is 79/30.
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,
9/30 = 9 × 2/30 × 2 = 18/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
28/12 = 28 × 5/12 × 5 = 140/60 - Add the two like fractions:
18/60 + 140/60 = 18 + 140/60 = 158/60 - 158/60 simplified gives 79/30
- So, 9/30 + 28/12 = 79/30
In mixed form: 219/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30+28/12 9/30+56/12 9/60+28/12 9/30+28/24 27/30+28/12 9/30+84/12 9/90+28/12 9/30+28/36 45/30+28/12 9/30+28/60 63/30+28/12 9/30+28/84