Add 21/27 and 1/81
21/27 + 1/81 is 64/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 27 × 3 = 81,
21/27 = 21 × 3/27 × 3 = 63/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
1/81 = 1 × 1/81 × 1 = 1/81 - Add the two like fractions:
63/81 + 1/81 = 63 + 1/81 = 64/81 - So, 21/27 + 1/81 = 64/81
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