Answers

Subtract 70/64 from 5/21

1^st number: 5/21, 2^nd number: 1 6/64

5/21 - 70/64 is -575/672.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 64 is 1344
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1344
2. For the 1st fraction, since 21 × 64 = 1344,
   5/21 = 5 × 64/21 × 64 = 320/1344
3. Likewise, for the 2nd fraction, since 64 × 21 = 1344,
   70/64 = 70 × 21/64 × 21 = 1470/1344
4. Subtract the two like fractions:
   320/1344 - 1470/1344 = 320 - 1470/1344 = -1150/1344
5. After reducing the fraction, the answer is -575/672

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