Add 18/81 and 30/75
18/81 + 30/75 is 28/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 75 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 75 × 27 = 2025,
30/75 = 30 × 27/75 × 27 = 810/2025 - Add the two like fractions:
450/2025 + 810/2025 = 450 + 810/2025 = 1260/2025 - 1260/2025 simplified gives 28/45
- So, 18/81 + 30/75 = 28/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/81+30/75 18/81+60/75 54/81+30/75 18/81+90/75 90/81+30/75