Add 15/12 and 40/30
1st number: 1 3/12, 2nd number: 1 10/30
15/12 + 40/30 is 31/12.
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,
40/30 = 40 × 2/30 × 2 = 80/60 - Add the two like fractions:
75/60 + 80/60 = 75 + 80/60 = 155/60 - 155/60 simplified gives 31/12
- So, 15/12 + 40/30 = 31/12
In mixed form: 27/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+40/30 15/12+80/30 15/24+40/30 15/12+40/60 45/12+40/30 15/36+40/30 15/12+40/90 75/12+40/30 15/60+40/30 15/84+40/30