Add 70/4 and 84/81
1st number: 17 2/4, 2nd number: 1 3/81
70/4 + 84/81 is 1001/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
70/4 = 70 × 81/4 × 81 = 5670/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
84/81 = 84 × 4/81 × 4 = 336/324 - Add the two like fractions:
5670/324 + 336/324 = 5670 + 336/324 = 6006/324 - 6006/324 simplified gives 1001/54
- So, 70/4 + 84/81 = 1001/54
In mixed form: 1829/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/8+84/81 70/12+84/81 70/20+84/81 70/28+84/81