Answers

Subtract 1/21 from 15/64

15/64 - 1/21 is 251/1344.

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,
   15/64 = 15 × 21/64 × 21 = 315/1344
3. Likewise, for the 2nd fraction, since 21 × 64 = 1344,
   1/21 = 1 × 64/21 × 64 = 64/1344
4. Subtract the two like fractions:
   315/1344 - 64/1344 = 315 - 64/1344 = 251/1344

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