Add 70/81 and 4/9
70/81 + 4/9 is 106/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
70/81 = 70 × 1/81 × 1 = 70/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
4/9 = 4 × 9/9 × 9 = 36/81 - Add the two like fractions:
70/81 + 36/81 = 70 + 36/81 = 106/81 - So, 70/81 + 4/9 = 106/81
In mixed form: 125/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81+8/9 70/81+4/18 70/81+12/9 70/81+4/27 70/81+20/9 70/81+4/45 70/81+28/9 70/81+4/63