Add 12/21 and 7/36
12/21 + 7/36 is 193/252.
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,
12/21 = 12 × 12/21 × 12 = 144/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
7/36 = 7 × 7/36 × 7 = 49/252 - Add the two like fractions:
144/252 + 49/252 = 144 + 49/252 = 193/252 - So, 12/21 + 7/36 = 193/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+7/36 12/21+14/36 12/42+7/36 12/21+7/72 36/21+7/36 12/21+21/36 12/63+7/36 60/21+7/36 12/21+35/36 84/21+7/36 12/21+49/36