Add 28/84 and 4/81
28/84 + 4/81 is 31/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
28/84 = 28 × 27/84 × 27 = 756/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
4/81 = 4 × 28/81 × 28 = 112/2268 - Add the two like fractions:
756/2268 + 112/2268 = 756 + 112/2268 = 868/2268 - 868/2268 simplified gives 31/81
- So, 28/84 + 4/81 = 31/81
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