Add 70/9 and 14/81
1st number: 7 7/9, 2nd number: 14/81
70/9 + 14/81 is 644/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
70/9 = 70 × 9/9 × 9 = 630/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
14/81 = 14 × 1/81 × 1 = 14/81 - Add the two like fractions:
630/81 + 14/81 = 630 + 14/81 = 644/81 - So, 70/9 + 14/81 = 644/81
In mixed form: 777/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/9+28/81 70/18+14/81 70/9+42/81 70/27+14/81 70/9+70/81 70/45+14/81 70/9+98/81 70/63+14/81