Answers

Subtract 7/20 from 3/80

3/80 - 7/20 is -5/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   3/80 = 3 × 1/80 × 1 = 3/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   7/20 = 7 × 4/20 × 4 = 28/80
4. Subtract the two like fractions:
   3/80 - 28/80 = 3 - 28/80 = -25/80
5. After reducing the fraction, the answer is -5/16

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