Answers

Subtract 90/35 from 54/40

1^st number: 1 14/40, 2^nd number: 2 20/35

54/40 - 90/35 is -171/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 35 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   54/40 = 54 × 7/40 × 7 = 378/280
3. Likewise, for the 2nd fraction, since 35 × 8 = 280,
   90/35 = 90 × 8/35 × 8 = 720/280
4. Subtract the two like fractions:
   378/280 - 720/280 = 378 - 720/280 = -342/280
5. After reducing the fraction, the answer is -171/140

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