Answers

Subtract 42/96 from 21/20

1^st number: 1 1/20, 2^nd number: 42/96

21/20 - 42/96 is 49/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 96 is 480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 480
2. For the 1st fraction, since 20 × 24 = 480,
   21/20 = 21 × 24/20 × 24 = 504/480
3. Likewise, for the 2nd fraction, since 96 × 5 = 480,
   42/96 = 42 × 5/96 × 5 = 210/480
4. Subtract the two like fractions:
   504/480 - 210/480 = 504 - 210/480 = 294/480
5. After reducing the fraction, the answer is 49/80

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