Add 9/4 and 5/81
1st number: 2 1/4, 2nd number: 5/81
9/4 + 5/81 is 749/324.
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,
9/4 = 9 × 81/4 × 81 = 729/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
5/81 = 5 × 4/81 × 4 = 20/324 - Add the two like fractions:
729/324 + 20/324 = 729 + 20/324 = 749/324 - So, 9/4 + 5/81 = 749/324
In mixed form: 2101/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/4+5/81 9/4+10/81 9/8+5/81 27/4+5/81 9/4+15/81 9/12+5/81 45/4+5/81 9/4+25/81 9/20+5/81 63/4+5/81 9/4+35/81 9/28+5/81