Add 5/4 and 45/81
1st number: 1 1/4, 2nd number: 45/81
5/4 + 45/81 is 65/36.
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,
5/4 = 5 × 81/4 × 81 = 405/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
45/81 = 45 × 4/81 × 4 = 180/324 - Add the two like fractions:
405/324 + 180/324 = 405 + 180/324 = 585/324 - 585/324 simplified gives 65/36
- So, 5/4 + 45/81 = 65/36
In mixed form: 129/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+45/81 5/4+90/81 5/8+45/81 15/4+45/81 5/12+45/81 25/4+45/81 5/20+45/81 35/4+45/81 5/28+45/81