Add 7/4 and 40/81
1st number: 1 3/4, 2nd number: 40/81
7/4 + 40/81 is 727/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
7/4 = 7 × 81/4 × 81 = 567/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
40/81 = 40 × 4/81 × 4 = 160/324 - Add the two like fractions:
567/324 + 160/324 = 567 + 160/324 = 727/324 - So, 7/4 + 40/81 = 727/324
In mixed form: 279/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4+40/81 7/4+80/81 7/8+40/81 21/4+40/81 7/12+40/81 35/4+40/81 7/20+40/81 49/4+40/81 7/28+40/81