Add 27/36 and 48/21
1st number: 27/36, 2nd number: 2 6/21
27/36 + 48/21 is 85/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
27/36 = 27 × 7/36 × 7 = 189/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
48/21 = 48 × 12/21 × 12 = 576/252 - Add the two like fractions:
189/252 + 576/252 = 189 + 576/252 = 765/252 - 765/252 simplified gives 85/28
- So, 27/36 + 48/21 = 85/28
In mixed form: 31/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/36+48/21 27/36+96/21 27/72+48/21 27/36+48/42 81/36+48/21 27/36+48/63