Add 42/12 and 21/81
1st number: 3 6/12, 2nd number: 21/81
42/12 + 21/81 is 203/54.
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,
42/12 = 42 × 27/12 × 27 = 1134/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324 - Add the two like fractions:
1134/324 + 84/324 = 1134 + 84/324 = 1218/324 - 1218/324 simplified gives 203/54
- So, 42/12 + 21/81 = 203/54
In mixed form: 341/54
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