Add 30/4 and 9/12
1st number: 7 2/4, 2nd number: 9/12
30/4 + 9/12 is 33/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
30/4 = 30 × 3/4 × 3 = 90/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
9/12 = 9 × 1/12 × 1 = 9/12 - Add the two like fractions:
90/12 + 9/12 = 90 + 9/12 = 99/12 - 99/12 simplified gives 33/4
- So, 30/4 + 9/12 = 33/4
In mixed form: 81/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/4+9/12 30/4+18/12 30/8+9/12 30/4+9/24 90/4+9/12 30/4+27/12 30/12+9/12 30/4+9/36 30/4+45/12 30/20+9/12 30/4+9/60 30/4+63/12 30/28+9/12 30/4+9/84