Add 90/3 and 20/81
1st number: 30 0/3, 2nd number: 20/81
90/3 + 20/81 is 2450/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
90/3 = 90 × 27/3 × 27 = 2430/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
20/81 = 20 × 1/81 × 1 = 20/81 - Add the two like fractions:
2430/81 + 20/81 = 2430 + 20/81 = 2450/81 - So, 90/3 + 20/81 = 2450/81
In mixed form: 3020/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3+40/81 90/6+20/81 90/3+60/81 90/9+20/81 90/15+20/81 90/21+20/81