Add 3/12 and 21/81
3/12 + 21/81 is 55/108.
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,
3/12 = 3 × 27/12 × 27 = 81/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324 - Add the two like fractions:
81/324 + 84/324 = 81 + 84/324 = 165/324 - 165/324 simplified gives 55/108
- So, 3/12 + 21/81 = 55/108
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