Add 20/81 and 15/12
1st number: 20/81, 2nd number: 1 3/12
20/81 + 15/12 is 485/324.
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,
20/81 = 20 × 4/81 × 4 = 80/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
15/12 = 15 × 27/12 × 27 = 405/324 - Add the two like fractions:
80/324 + 405/324 = 80 + 405/324 = 485/324 - So, 20/81 + 15/12 = 485/324
In mixed form: 1161/324
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