Answers

Subtract 84/80 from 12/54

1^st number: 12/54, 2^nd number: 1 4/80

12/54 - 84/80 is -149/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 80 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 54 × 40 = 2160,
   12/54 = 12 × 40/54 × 40 = 480/2160
3. Likewise, for the 2nd fraction, since 80 × 27 = 2160,
   84/80 = 84 × 27/80 × 27 = 2268/2160
4. Subtract the two like fractions:
   480/2160 - 2268/2160 = 480 - 2268/2160 = -1788/2160
5. After reducing the fraction, the answer is -149/180

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