Add 5/84 and 21/36
5/84 + 21/36 is 9/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
5/84 = 5 × 3/84 × 3 = 15/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Add the two like fractions:
15/252 + 147/252 = 15 + 147/252 = 162/252 - 162/252 simplified gives 9/14
- So, 5/84 + 21/36 = 9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84+21/36 5/84+42/36 5/84+21/72 15/84+21/36 5/84+63/36 25/84+21/36 35/84+21/36