Add 30/81 and 5/70
30/81 + 5/70 is 167/378.
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,
5/70 = 5 × 81/70 × 81 = 405/5670 - Add the two like fractions:
2100/5670 + 405/5670 = 2100 + 405/5670 = 2505/5670 - 2505/5670 simplified gives 167/378
- So, 30/81 + 5/70 = 167/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/81+5/70 30/81+10/70 90/81+5/70 30/81+15/70 30/81+25/70 30/81+35/70