Add 3/81 and 42/8
1st number: 3/81, 2nd number: 5 2/8
3/81 + 42/8 is 571/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 8 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
3/81 = 3 × 8/81 × 8 = 24/648 - Likewise, for the 2nd fraction, since 8 × 81 = 648,
42/8 = 42 × 81/8 × 81 = 3402/648 - Add the two like fractions:
24/648 + 3402/648 = 24 + 3402/648 = 3426/648 - 3426/648 simplified gives 571/108
- So, 3/81 + 42/8 = 571/108
In mixed form: 531/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/81+42/8 3/81+84/8 3/81+42/16 9/81+42/8 3/81+42/24 15/81+42/8 3/81+42/40 21/81+42/8 3/81+42/56