Answers

Subtract 21/96 from 84/90

84/90 - 21/96 is 343/480.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 96 is 1440
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1440
2. For the 1st fraction, since 90 × 16 = 1440,
   84/90 = 84 × 16/90 × 16 = 1344/1440
3. Likewise, for the 2nd fraction, since 96 × 15 = 1440,
   21/96 = 21 × 15/96 × 15 = 315/1440
4. Subtract the two like fractions:
   1344/1440 - 315/1440 = 1344 - 315/1440 = 1029/1440
5. After reducing the fraction, the answer is 343/480

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