Add 40/12 and 84/81
1st number: 3 4/12, 2nd number: 1 3/81
40/12 + 84/81 is 118/27.
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,
40/12 = 40 × 27/12 × 27 = 1080/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
84/81 = 84 × 4/81 × 4 = 336/324 - Add the two like fractions:
1080/324 + 336/324 = 1080 + 336/324 = 1416/324 - 1416/324 simplified gives 118/27
- So, 40/12 + 84/81 = 118/27
In mixed form: 410/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12+84/81 40/24+84/81 40/36+84/81 40/60+84/81 40/84+84/81