Answers

Subtract 9/16 from 20/40

20/40 - 9/16 is -1/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 40 × 2 = 80,
   20/40 = 20 × 2/40 × 2 = 40/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   9/16 = 9 × 5/16 × 5 = 45/80
4. Subtract the two like fractions:
   40/80 - 45/80 = 40 - 45/80 = -5/80
5. After reducing the fraction, the answer is -1/16

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