Add 30/10 and 15/12
1st number: 3 0/10, 2nd number: 1 3/12
30/10 + 15/12 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
30/10 = 30 × 6/10 × 6 = 180/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
15/12 = 15 × 5/12 × 5 = 75/60 - Add the two like fractions:
180/60 + 75/60 = 180 + 75/60 = 255/60 - 255/60 simplified gives 17/4
- So, 30/10 + 15/12 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10+15/12 30/10+30/12 30/20+15/12 30/10+15/24 90/10+15/12 30/10+45/12 30/10+15/36 30/10+75/12 30/50+15/12 30/10+15/60 30/70+15/12 30/10+15/84