Add 30/15 and 30/12
1st number: 2 0/15, 2nd number: 2 6/12
30/15 + 30/12 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
30/15 = 30 × 4/15 × 4 = 120/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Add the two like fractions:
120/60 + 150/60 = 120 + 150/60 = 270/60 - 270/60 simplified gives 9/2
- So, 30/15 + 30/12 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+30/12 30/15+60/12 30/15+30/24 90/15+30/12 30/15+90/12 30/45+30/12 30/15+30/36 30/75+30/12 30/15+30/60 30/15+30/84