Add 84/36 and 42/81
1st number: 2 12/36, 2nd number: 42/81
84/36 + 42/81 is 77/27.
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,
84/36 = 84 × 9/36 × 9 = 756/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
42/81 = 42 × 4/81 × 4 = 168/324 - Add the two like fractions:
756/324 + 168/324 = 756 + 168/324 = 924/324 - 924/324 simplified gives 77/27
- So, 84/36 + 42/81 = 77/27
In mixed form: 223/27
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