Add 7/12 and 40/81
7/12 + 40/81 is 349/324.
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,
7/12 = 7 × 27/12 × 27 = 189/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
40/81 = 40 × 4/81 × 4 = 160/324 - Add the two like fractions:
189/324 + 160/324 = 189 + 160/324 = 349/324 - So, 7/12 + 40/81 = 349/324
In mixed form: 125/324
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