Add 18/12 and 42/81
1st number: 1 6/12, 2nd number: 42/81
18/12 + 42/81 is 109/54.
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,
18/12 = 18 × 27/12 × 27 = 486/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
42/81 = 42 × 4/81 × 4 = 168/324 - Add the two like fractions:
486/324 + 168/324 = 486 + 168/324 = 654/324 - 654/324 simplified gives 109/54
- So, 18/12 + 42/81 = 109/54
In mixed form: 21/54
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