Add 45/12 and 28/30
1st number: 3 9/12, 2nd number: 28/30
45/12 + 28/30 is 281/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
28/30 = 28 × 2/30 × 2 = 56/60 - Add the two like fractions:
225/60 + 56/60 = 225 + 56/60 = 281/60 - So, 45/12 + 28/30 = 281/60
In mixed form: 441/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+28/30 45/12+56/30 45/24+28/30 45/12+28/60 45/12+84/30 45/36+28/30 45/12+28/90 45/60+28/30 45/84+28/30