Add 84/8 and 7/81
1st number: 10 4/8, 2nd number: 7/81
84/8 + 7/81 is 1715/162.
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,
84/8 = 84 × 81/8 × 81 = 6804/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
7/81 = 7 × 8/81 × 8 = 56/648 - Add the two like fractions:
6804/648 + 56/648 = 6804 + 56/648 = 6860/648 - 6860/648 simplified gives 1715/162
- So, 84/8 + 7/81 = 1715/162
In mixed form: 1095/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+14/81 84/16+7/81 84/8+21/81 84/24+7/81 84/8+35/81 84/40+7/81 84/8+49/81 84/56+7/81