Answers

Subtract 4/8 from 7/20

7/20 - 4/8 is -3/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 8 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 20 × 2 = 40,
   7/20 = 7 × 2/20 × 2 = 14/40
3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
   4/8 = 4 × 5/8 × 5 = 20/40
4. Subtract the two like fractions:
   14/40 - 20/40 = 14 - 20/40 = -6/40
5. After reducing the fraction, the answer is -3/20

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