Add 81/9 and 20/30
1st number: 9 0/9, 2nd number: 20/30
81/9 + 20/30 is 29/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
81/9 = 81 × 10/9 × 10 = 810/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
20/30 = 20 × 3/30 × 3 = 60/90 - Add the two like fractions:
810/90 + 60/90 = 810 + 60/90 = 870/90 - 870/90 simplified gives 29/3
- So, 81/9 + 20/30 = 29/3
In mixed form: 92/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/9+40/30 81/18+20/30 81/9+20/60 81/9+60/30 81/27+20/30 81/9+20/90 81/45+20/30 81/63+20/30