Add 45/12 and 2/81
1st number: 3 9/12, 2nd number: 2/81
45/12 + 2/81 is 1223/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
45/12 = 45 × 27/12 × 27 = 1215/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
2/81 = 2 × 4/81 × 4 = 8/324 - Add the two like fractions:
1215/324 + 8/324 = 1215 + 8/324 = 1223/324 - So, 45/12 + 2/81 = 1223/324
In mixed form: 3251/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+2/81 45/12+4/81 45/24+2/81 45/12+6/81 45/36+2/81 45/12+10/81 45/60+2/81 45/12+14/81 45/84+2/81