Add 3/8 and 7/81
3/8 + 7/81 is 299/648.
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,
3/8 = 3 × 81/8 × 81 = 243/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
7/81 = 7 × 8/81 × 8 = 56/648 - Add the two like fractions:
243/648 + 56/648 = 243 + 56/648 = 299/648 - So, 3/8 + 7/81 = 299/648
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8+7/81 3/8+14/81 3/16+7/81 9/8+7/81 3/8+21/81 3/24+7/81 15/8+7/81 3/8+35/81 3/40+7/81 21/8+7/81 3/8+49/81 3/56+7/81