Add 21/28 and 2/36
21/28 + 2/36 is 29/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
2/36 = 2 × 7/36 × 7 = 14/252 - Add the two like fractions:
189/252 + 14/252 = 189 + 14/252 = 203/252 - 203/252 simplified gives 29/36
- So, 21/28 + 2/36 = 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+2/36 21/28+4/36 21/56+2/36 21/28+2/72 63/28+2/36 21/28+6/36 21/84+2/36 21/28+10/36 21/28+14/36