Answers

Subtract 32/81 from 21/28

21/28 - 32/81 is 115/324.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 28 × 81 = 2268,
   21/28 = 21 × 81/28 × 81 = 1701/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   32/81 = 32 × 28/81 × 28 = 896/2268
4. Subtract the two like fractions:
   1701/2268 - 896/2268 = 1701 - 896/2268 = 805/2268
5. After reducing the fraction, the answer is 115/324

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