Add 28/84 and 7/18
28/84 + 7/18 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
28/84 = 28 × 3/84 × 3 = 84/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
7/18 = 7 × 14/18 × 14 = 98/252 - Add the two like fractions:
84/252 + 98/252 = 84 + 98/252 = 182/252 - 182/252 simplified gives 13/18
- So, 28/84 + 7/18 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84+7/18 28/84+14/18 28/84+7/36 28/84+21/18 28/84+7/54 28/84+35/18 28/84+7/90 28/84+49/18