Answers

Subtract 63/70 from 9/64

9/64 - 63/70 is -243/320.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 70 is 2240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2240
2. For the 1st fraction, since 64 × 35 = 2240,
   9/64 = 9 × 35/64 × 35 = 315/2240
3. Likewise, for the 2nd fraction, since 70 × 32 = 2240,
   63/70 = 63 × 32/70 × 32 = 2016/2240
4. Subtract the two like fractions:
   315/2240 - 2016/2240 = 315 - 2016/2240 = -1701/2240
5. After reducing the fraction, the answer is -243/320

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