Add 7/81 and 7/45
7/81 + 7/45 is 98/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 45 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
7/81 = 7 × 5/81 × 5 = 35/405 - Likewise, for the 2nd fraction, since 45 × 9 = 405,
7/45 = 7 × 9/45 × 9 = 63/405 - Add the two like fractions:
35/405 + 63/405 = 35 + 63/405 = 98/405 - So, 7/81 + 7/45 = 98/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/81+7/45 7/81+14/45 7/81+7/90 21/81+7/45 7/81+21/45 35/81+7/45 7/81+35/45 49/81+7/45 7/81+49/45