Add 15/75 and 84/81
1st number: 15/75, 2nd number: 1 3/81
15/75 + 84/81 is 167/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 75 × 27 = 2025,
15/75 = 15 × 27/75 × 27 = 405/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
84/81 = 84 × 25/81 × 25 = 2100/2025 - Add the two like fractions:
405/2025 + 2100/2025 = 405 + 2100/2025 = 2505/2025 - 2505/2025 simplified gives 167/135
- So, 15/75 + 84/81 = 167/135
In mixed form: 132/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+84/81 45/75+84/81