Add 12/28 and 9/18
12/28 + 9/18 is 13/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
12/28 = 12 × 9/28 × 9 = 108/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
9/18 = 9 × 14/18 × 14 = 126/252 - Add the two like fractions:
108/252 + 126/252 = 108 + 126/252 = 234/252 - 234/252 simplified gives 13/14
- So, 12/28 + 9/18 = 13/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+9/18 12/56+9/18 12/28+9/36 36/28+9/18 12/28+27/18 12/84+9/18 12/28+9/54 60/28+9/18 12/28+45/18 12/28+9/90 84/28+9/18 12/28+63/18