Add 21/81 and 63/18
1st number: 21/81, 2nd number: 3 9/18
21/81 + 63/18 is 203/54.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
63/18 = 63 × 9/18 × 9 = 567/162 - Add the two like fractions:
42/162 + 567/162 = 42 + 567/162 = 609/162 - 609/162 simplified gives 203/54
- So, 21/81 + 63/18 = 203/54
In mixed form: 341/54
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