Add 10/25 and 18/81
10/25 + 18/81 is 28/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 25 × 81 = 2025,
10/25 = 10 × 81/25 × 81 = 810/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
18/81 = 18 × 25/81 × 25 = 450/2025 - Add the two like fractions:
810/2025 + 450/2025 = 810 + 450/2025 = 1260/2025 - 1260/2025 simplified gives 28/45
- So, 10/25 + 18/81 = 28/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/25+18/81 10/25+36/81 10/50+18/81 30/25+18/81 10/25+54/81 10/75+18/81 50/25+18/81 10/25+90/81 70/25+18/81