Add 3/70 and 15/81
3/70 + 15/81 is 431/1890.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
3/70 = 3 × 81/70 × 81 = 243/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
15/81 = 15 × 70/81 × 70 = 1050/5670 - Add the two like fractions:
243/5670 + 1050/5670 = 243 + 1050/5670 = 1293/5670 - 1293/5670 simplified gives 431/1890
- So, 3/70 + 15/81 = 431/1890
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70+15/81 3/70+30/81 9/70+15/81 3/70+45/81 15/70+15/81 3/70+75/81 21/70+15/81