Add 9/21 and 7/36
9/21 + 7/36 is 157/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 21 × 12 = 252,
9/21 = 9 × 12/21 × 12 = 108/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
7/36 = 7 × 7/36 × 7 = 49/252 - Add the two like fractions:
108/252 + 49/252 = 108 + 49/252 = 157/252 - So, 9/21 + 7/36 = 157/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+7/36 9/21+14/36 9/42+7/36 9/21+7/72 27/21+7/36 9/21+21/36 9/63+7/36 45/21+7/36 9/21+35/36 63/21+7/36 9/21+49/36