Add 20/36 and 21/10
1st number: 20/36, 2nd number: 2 1/10
20/36 + 21/10 is 239/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 10 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Likewise, for the 2nd fraction, since 10 × 18 = 180,
21/10 = 21 × 18/10 × 18 = 378/180 - Add the two like fractions:
100/180 + 378/180 = 100 + 378/180 = 478/180 - 478/180 simplified gives 239/90
- So, 20/36 + 21/10 = 239/90
In mixed form: 259/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36+21/10 20/36+42/10 20/72+21/10 20/36+21/20 60/36+21/10 20/36+63/10 20/36+21/30 20/36+21/50 20/36+21/70