Add 15/12 and 75/30
1st number: 1 3/12, 2nd number: 2 15/30
15/12 + 75/30 is 15/4.
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,
15/12 = 15 × 5/12 × 5 = 75/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
75/30 = 75 × 2/30 × 2 = 150/60 - Add the two like fractions:
75/60 + 150/60 = 75 + 150/60 = 225/60 - 225/60 simplified gives 15/4
- So, 15/12 + 75/30 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+75/30 15/24+75/30 15/12+75/60 45/12+75/30 15/36+75/30 15/12+75/90 75/12+75/30 15/60+75/30 15/84+75/30