Answers

Subtract 20/35 from 15/64

15/64 - 20/35 is -151/448.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 35 is 2240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2240
2. For the 1st fraction, since 64 × 35 = 2240,
   15/64 = 15 × 35/64 × 35 = 525/2240
3. Likewise, for the 2nd fraction, since 35 × 64 = 2240,
   20/35 = 20 × 64/35 × 64 = 1280/2240
4. Subtract the two like fractions:
   525/2240 - 1280/2240 = 525 - 1280/2240 = -755/2240
5. After reducing the fraction, the answer is -151/448

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