Add 21/81 and 27/28
21/81 + 27/28 is 925/756.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 28 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
21/81 = 21 × 28/81 × 28 = 588/2268 - Likewise, for the 2nd fraction, since 28 × 81 = 2268,
27/28 = 27 × 81/28 × 81 = 2187/2268 - Add the two like fractions:
588/2268 + 2187/2268 = 588 + 2187/2268 = 2775/2268 - 2775/2268 simplified gives 925/756
- So, 21/81 + 27/28 = 925/756
In mixed form: 1169/756
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