Add 81/20 and 35/12
1st number: 4 1/20, 2nd number: 2 11/12
81/20 + 35/12 is 209/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
35/12 = 35 × 5/12 × 5 = 175/60 - Add the two like fractions:
243/60 + 175/60 = 243 + 175/60 = 418/60 - 418/60 simplified gives 209/30
- So, 81/20 + 35/12 = 209/30
In mixed form: 629/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/20+70/12 81/40+35/12 81/20+35/24 81/60+35/12 81/20+35/36 81/20+35/60 81/20+35/84