Add 3/81 and 20/8
1st number: 3/81, 2nd number: 2 4/8
3/81 + 20/8 is 137/54.
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,
20/8 = 20 × 81/8 × 81 = 1620/648 - Add the two like fractions:
24/648 + 1620/648 = 24 + 1620/648 = 1644/648 - 1644/648 simplified gives 137/54
- So, 3/81 + 20/8 = 137/54
In mixed form: 229/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/81+20/8 3/81+40/8 3/81+20/16 9/81+20/8 3/81+60/8 3/81+20/24 15/81+20/8 3/81+20/40 21/81+20/8 3/81+20/56