Answers

Subtract 35/20 from 54/80

1^st number: 54/80, 2^nd number: 1 15/20

54/80 - 35/20 is -43/40.

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,
   54/80 = 54 × 1/80 × 1 = 54/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   35/20 = 35 × 4/20 × 4 = 140/80
4. Subtract the two like fractions:
   54/80 - 140/80 = 54 - 140/80 = -86/80
5. After reducing the fraction, the answer is -43/40

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