Add 25/70 and 56/81
25/70 + 56/81 is 1189/1134.
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,
25/70 = 25 × 81/70 × 81 = 2025/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
56/81 = 56 × 70/81 × 70 = 3920/5670 - Add the two like fractions:
2025/5670 + 3920/5670 = 2025 + 3920/5670 = 5945/5670 - 5945/5670 simplified gives 1189/1134
- So, 25/70 + 56/81 = 1189/1134
In mixed form: 155/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/70+56/81 75/70+56/81