Answers

Subtract 90/7 from 27/64

1^st number: 27/64, 2^nd number: 12 6/7

27/64 - 90/7 is -5571/448.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 7 is 448
   
   Next, find the equivalent fraction of both fractional numbers with denominator 448
2. For the 1st fraction, since 64 × 7 = 448,
   27/64 = 27 × 7/64 × 7 = 189/448
3. Likewise, for the 2nd fraction, since 7 × 64 = 448,
   90/7 = 90 × 64/7 × 64 = 5760/448
4. Subtract the two like fractions:
   189/448 - 5760/448 = 189 - 5760/448 = -5571/448

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