Add 21/18 and 4/81
1st number: 1 3/18, 2nd number: 4/81
21/18 + 4/81 is 197/162.
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,
21/18 = 21 × 9/18 × 9 = 189/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
4/81 = 4 × 2/81 × 2 = 8/162 - Add the two like fractions:
189/162 + 8/162 = 189 + 8/162 = 197/162 - So, 21/18 + 4/81 = 197/162
In mixed form: 135/162
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