Answers

Subtract 63/81 from 84/28

1^st number: 3 0/28, 2^nd number: 63/81

84/28 - 63/81 is 20/9.

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,
   84/28 = 84 × 81/28 × 81 = 6804/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   63/81 = 63 × 28/81 × 28 = 1764/2268
4. Subtract the two like fractions:
   6804/2268 - 1764/2268 = 6804 - 1764/2268 = 5040/2268
5. After reducing the fraction, the answer is 20/9
6. In mixed form: 22/9

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