Answers

Subtract 45/20 from 90/96

1^st number: 90/96, 2^nd number: 2 5/20

90/96 - 45/20 is -21/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 96 and 20 is 480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 480
2. For the 1st fraction, since 96 × 5 = 480,
   90/96 = 90 × 5/96 × 5 = 450/480
3. Likewise, for the 2nd fraction, since 20 × 24 = 480,
   45/20 = 45 × 24/20 × 24 = 1080/480
4. Subtract the two like fractions:
   450/480 - 1080/480 = 450 - 1080/480 = -630/480
5. After reducing the fraction, the answer is -21/16

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