Answers

Subtract 49/40 from 15/20

1^st number: 15/20, 2^nd number: 1 9/40

15/20 - 49/40 is -19/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 40 is 40
   
   Next, find the equivalent fraction of both fractional numbers with denominator 40
2. For the 1st fraction, since 20 × 2 = 40,
   15/20 = 15 × 2/20 × 2 = 30/40
3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
   49/40 = 49 × 1/40 × 1 = 49/40
4. Subtract the two like fractions:
   30/40 - 49/40 = 30 - 49/40 = -19/40

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