Add 81/36 and 9/20
1st number: 2 9/36, 2nd number: 9/20
81/36 + 9/20 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
81/36 = 81 × 5/36 × 5 = 405/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Add the two like fractions:
405/180 + 81/180 = 405 + 81/180 = 486/180 - 486/180 simplified gives 27/10
- So, 81/36 + 9/20 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/36+18/20 81/72+9/20 81/36+9/40 81/36+27/20 81/36+9/60 81/36+45/20 81/36+63/20