Add 5/7 and 21/36
5/7 + 21/36 is 109/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 7 × 36 = 252,
5/7 = 5 × 36/7 × 36 = 180/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Add the two like fractions:
180/252 + 147/252 = 180 + 147/252 = 327/252 - 327/252 simplified gives 109/84
- So, 5/7 + 21/36 = 109/84
In mixed form: 125/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+21/36 5/7+42/36 5/14+21/36 5/7+21/72 15/7+21/36 5/7+63/36 5/21+21/36 25/7+21/36 5/35+21/36 35/7+21/36 5/49+21/36