Add 30/8 and 3/81
1st number: 3 6/8, 2nd number: 3/81
30/8 + 3/81 is 409/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
30/8 = 30 × 81/8 × 81 = 2430/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
3/81 = 3 × 8/81 × 8 = 24/648 - Add the two like fractions:
2430/648 + 24/648 = 2430 + 24/648 = 2454/648 - 2454/648 simplified gives 409/108
- So, 30/8 + 3/81 = 409/108
In mixed form: 385/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8+3/81 30/8+6/81 30/16+3/81 90/8+3/81 30/8+9/81 30/24+3/81 30/8+15/81 30/40+3/81 30/8+21/81 30/56+3/81