Answers

Subtract 84/40 from 12/54

1^st number: 12/54, 2^nd number: 2 4/40

12/54 - 84/40 is -169/90.

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,
   12/54 = 12 × 20/54 × 20 = 240/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   84/40 = 84 × 27/40 × 27 = 2268/1080
4. Subtract the two like fractions:
   240/1080 - 2268/1080 = 240 - 2268/1080 = -2028/1080
5. After reducing the fraction, the answer is -169/90

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