Add 42/36 and 21/81
1st number: 1 6/36, 2nd number: 21/81
42/36 + 21/81 is 77/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 36 × 9 = 324,
42/36 = 42 × 9/36 × 9 = 378/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
21/81 = 21 × 4/81 × 4 = 84/324 - Add the two like fractions:
378/324 + 84/324 = 378 + 84/324 = 462/324 - 462/324 simplified gives 77/54
- So, 42/36 + 21/81 = 77/54
In mixed form: 123/54
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