Add 84/36 and 21/81
1st number: 2 12/36, 2nd number: 21/81
84/36 + 21/81 is 70/27.
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,
21/81 = 21 × 4/81 × 4 = 84/324 - Add the two like fractions:
756/324 + 84/324 = 756 + 84/324 = 840/324 - 840/324 simplified gives 70/27
- So, 84/36 + 21/81 = 70/27
In mixed form: 216/27
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