Add 70/15 and 3/81
1st number: 4 10/15, 2nd number: 3/81
70/15 + 3/81 is 127/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
70/15 = 70 × 27/15 × 27 = 1890/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
3/81 = 3 × 5/81 × 5 = 15/405 - Add the two like fractions:
1890/405 + 15/405 = 1890 + 15/405 = 1905/405 - 1905/405 simplified gives 127/27
- So, 70/15 + 3/81 = 127/27
In mixed form: 419/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+6/81 70/30+3/81 70/15+9/81 70/45+3/81 70/15+15/81 70/75+3/81 70/15+21/81