Add 9/28 and 9/12
9/28 + 9/12 is 15/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
9/28 = 9 × 3/28 × 3 = 27/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
9/12 = 9 × 7/12 × 7 = 63/84 - Add the two like fractions:
27/84 + 63/84 = 27 + 63/84 = 90/84 - 90/84 simplified gives 15/14
- So, 9/28 + 9/12 = 15/14
In mixed form: 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+9/12 9/28+18/12 9/56+9/12 9/28+9/24 27/28+9/12 9/28+27/12 9/84+9/12 9/28+9/36 45/28+9/12 9/28+45/12 9/28+9/60 63/28+9/12 9/28+63/12 9/28+9/84