Add 30/81 and 27/70
30/81 + 27/70 is 1429/1890.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
30/81 = 30 × 70/81 × 70 = 2100/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
27/70 = 27 × 81/70 × 81 = 2187/5670 - Add the two like fractions:
2100/5670 + 2187/5670 = 2100 + 2187/5670 = 4287/5670 - 4287/5670 simplified gives 1429/1890
- So, 30/81 + 27/70 = 1429/1890
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81+27/70 30/81+54/70 90/81+27/70 30/81+81/70