Add 21/81 and 2/12
21/81 + 2/12 is 23/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
2/12 = 2 × 27/12 × 27 = 54/324 - Add the two like fractions:
84/324 + 54/324 = 84 + 54/324 = 138/324 - 138/324 simplified gives 23/54
- So, 21/81 + 2/12 = 23/54
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