Answers

Subtract 75/96 from 4/21

4/21 - 75/96 is -397/672.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 96 is 672
   
   Next, find the equivalent fraction of both fractional numbers with denominator 672
2. For the 1st fraction, since 21 × 32 = 672,
   4/21 = 4 × 32/21 × 32 = 128/672
3. Likewise, for the 2nd fraction, since 96 × 7 = 672,
   75/96 = 75 × 7/96 × 7 = 525/672
4. Subtract the two like fractions:
   128/672 - 525/672 = 128 - 525/672 = -397/672

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