Add 21/10 and 20/36
1st number: 2 1/10, 2nd number: 20/36
21/10 + 20/36 is 239/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 10 × 18 = 180,
21/10 = 21 × 18/10 × 18 = 378/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
20/36 = 20 × 5/36 × 5 = 100/180 - Add the two like fractions:
378/180 + 100/180 = 378 + 100/180 = 478/180 - 478/180 simplified gives 239/90
- So, 21/10 + 20/36 = 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: 42/10+20/36 21/10+40/36 21/20+20/36 21/10+20/72 63/10+20/36 21/10+60/36 21/30+20/36 21/50+20/36 21/70+20/36