Answers

Subtract 63/42 from 9/64

1^st number: 9/64, 2^nd number: 1 21/42

9/64 - 63/42 is -87/64.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 42 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 64 × 21 = 1344,
   9/64 = 9 × 21/64 × 21 = 189/1344
3. Likewise, for the 2nd fraction, since 42 × 32 = 1344,
   63/42 = 63 × 32/42 × 32 = 2016/1344
4. Subtract the two like fractions:
   189/1344 - 2016/1344 = 189 - 2016/1344 = -1827/1344
5. After reducing the fraction, the answer is -87/64

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