Answers

Subtract 18/21 from 81/64

1^st number: 1 17/64, 2^nd number: 18/21

81/64 - 18/21 is 183/448.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 21 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 64 × 21 = 1344,
   81/64 = 81 × 21/64 × 21 = 1701/1344
3. Likewise, for the 2nd fraction, since 21 × 64 = 1344,
   18/21 = 18 × 64/21 × 64 = 1152/1344
4. Subtract the two like fractions:
   1701/1344 - 1152/1344 = 1701 - 1152/1344 = 549/1344
5. After reducing the fraction, the answer is 183/448

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