Answers

Subtract 75/54 from 30/40

1^st number: 30/40, 2^nd number: 1 21/54

30/40 - 75/54 is -23/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 54 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 40 × 27 = 1080,
   30/40 = 30 × 27/40 × 27 = 810/1080
3. Likewise, for the 2nd fraction, since 54 × 20 = 1080,
   75/54 = 75 × 20/54 × 20 = 1500/1080
4. Subtract the two like fractions:
   810/1080 - 1500/1080 = 810 - 1500/1080 = -690/1080
5. After reducing the fraction, the answer is -23/36

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