Add 84/18 and 21/81
1st number: 4 12/18, 2nd number: 21/81
84/18 + 21/81 is 133/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
84/18 = 84 × 9/18 × 9 = 756/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162 - Add the two like fractions:
756/162 + 42/162 = 756 + 42/162 = 798/162 - 798/162 simplified gives 133/27
- So, 84/18 + 21/81 = 133/27
In mixed form: 425/27
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