Add 12/21 and 2/36
12/21 + 2/36 is 79/126.
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,
2/36 = 2 × 7/36 × 7 = 14/252 - Add the two like fractions:
144/252 + 14/252 = 144 + 14/252 = 158/252 - 158/252 simplified gives 79/126
- So, 12/21 + 2/36 = 79/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+2/36 12/21+4/36 12/42+2/36 12/21+2/72 36/21+2/36 12/21+6/36 12/63+2/36 60/21+2/36 12/21+10/36 84/21+2/36 12/21+14/36