Answers

Subtract 70/54 from 54/80

1^st number: 54/80, 2^nd number: 1 16/54

54/80 - 70/54 is -671/1080.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 54 is 2160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2160
2. For the 1st fraction, since 80 × 27 = 2160,
   54/80 = 54 × 27/80 × 27 = 1458/2160
3. Likewise, for the 2nd fraction, since 54 × 40 = 2160,
   70/54 = 70 × 40/54 × 40 = 2800/2160
4. Subtract the two like fractions:
   1458/2160 - 2800/2160 = 1458 - 2800/2160 = -1342/2160
5. After reducing the fraction, the answer is -671/1080

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