Answers

Subtract 63/40 from 28/54

1^st number: 28/54, 2^nd number: 1 23/40

28/54 - 63/40 is -1141/1080.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   28/54 = 28 × 20/54 × 20 = 560/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   63/40 = 63 × 27/40 × 27 = 1701/1080
4. Subtract the two like fractions:
   560/1080 - 1701/1080 = 560 - 1701/1080 = -1141/1080

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