Add 7/81 and 5/49
7/81 + 5/49 is 748/3969.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 49 is 3969
Next, find the equivalent fraction of both fractional numbers with denominator 3969 - For the 1st fraction, since 81 × 49 = 3969,
7/81 = 7 × 49/81 × 49 = 343/3969 - Likewise, for the 2nd fraction, since 49 × 81 = 3969,
5/49 = 5 × 81/49 × 81 = 405/3969 - Add the two like fractions:
343/3969 + 405/3969 = 343 + 405/3969 = 748/3969 - So, 7/81 + 5/49 = 748/3969
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/81+5/49 7/81+10/49 7/81+5/98 21/81+5/49 7/81+15/49 35/81+5/49 7/81+25/49 49/81+5/49 7/81+35/49