Add 12/36 and 7/81
12/36 + 7/81 is 34/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 36 × 9 = 324,
12/36 = 12 × 9/36 × 9 = 108/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
7/81 = 7 × 4/81 × 4 = 28/324 - Add the two like fractions:
108/324 + 28/324 = 108 + 28/324 = 136/324 - 136/324 simplified gives 34/81
- So, 12/36 + 7/81 = 34/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/36+7/81 12/36+14/81 12/72+7/81 12/36+21/81 60/36+7/81 12/36+35/81 84/36+7/81 12/36+49/81