Answers

Subtract 81/40 from 4/50

1^st number: 4/50, 2^nd number: 2 1/40

4/50 - 81/40 is -389/200.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 40 is 200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 200
2. For the 1st fraction, since 50 × 4 = 200,
   4/50 = 4 × 4/50 × 4 = 16/200
3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
   81/40 = 81 × 5/40 × 5 = 405/200
4. Subtract the two like fractions:
   16/200 - 405/200 = 16 - 405/200 = -389/200

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