Add 18/81 and 15/25
18/81 + 15/25 is 37/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 25 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 81 × 25 = 2025,
18/81 = 18 × 25/81 × 25 = 450/2025 - Likewise, for the 2nd fraction, since 25 × 81 = 2025,
15/25 = 15 × 81/25 × 81 = 1215/2025 - Add the two like fractions:
450/2025 + 1215/2025 = 450 + 1215/2025 = 1665/2025 - 1665/2025 simplified gives 37/45
- So, 18/81 + 15/25 = 37/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/81+15/25 18/81+30/25 18/81+15/50 54/81+15/25 18/81+45/25 18/81+15/75 90/81+15/25 18/81+75/25