Answers

Subtract 20/40 from 42/96

42/96 - 20/40 is -1/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 96 and 40 is 480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 480
2. For the 1st fraction, since 96 × 5 = 480,
   42/96 = 42 × 5/96 × 5 = 210/480
3. Likewise, for the 2nd fraction, since 40 × 12 = 480,
   20/40 = 20 × 12/40 × 12 = 240/480
4. Subtract the two like fractions:
   210/480 - 240/480 = 210 - 240/480 = -30/480
5. After reducing the fraction, the answer is -1/16

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