Answers

Subtract 90/98 from 27/64

27/64 - 90/98 is -1557/3136.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 98 is 3136
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3136
2. For the 1st fraction, since 64 × 49 = 3136,
   27/64 = 27 × 49/64 × 49 = 1323/3136
3. Likewise, for the 2nd fraction, since 98 × 32 = 3136,
   90/98 = 90 × 32/98 × 32 = 2880/3136
4. Subtract the two like fractions:
   1323/3136 - 2880/3136 = 1323 - 2880/3136 = -1557/3136

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