Add 30/75 and 7/81
30/75 + 7/81 is 197/405.
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,
30/75 = 30 × 27/75 × 27 = 810/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
7/81 = 7 × 25/81 × 25 = 175/2025 - Add the two like fractions:
810/2025 + 175/2025 = 810 + 175/2025 = 985/2025 - 985/2025 simplified gives 197/405
- So, 30/75 + 7/81 = 197/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/75+7/81 30/75+14/81 90/75+7/81 30/75+21/81 30/75+35/81 30/75+49/81