Add 84/81 and 42/12
1st number: 1 3/81, 2nd number: 3 6/12
84/81 + 42/12 is 245/54.
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,
84/81 = 84 × 4/81 × 4 = 336/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
42/12 = 42 × 27/12 × 27 = 1134/324 - Add the two like fractions:
336/324 + 1134/324 = 336 + 1134/324 = 1470/324 - 1470/324 simplified gives 245/54
- So, 84/81 + 42/12 = 245/54
In mixed form: 429/54
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