Add 15/81 and 25/70
15/81 + 25/70 is 205/378.
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,
15/81 = 15 × 70/81 × 70 = 1050/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
25/70 = 25 × 81/70 × 81 = 2025/5670 - Add the two like fractions:
1050/5670 + 2025/5670 = 1050 + 2025/5670 = 3075/5670 - 3075/5670 simplified gives 205/378
- So, 15/81 + 25/70 = 205/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/81+25/70 15/81+50/70 45/81+25/70 15/81+75/70 75/81+25/70