Answers

Subtract 54/14 from 72/80

1^st number: 72/80, 2^nd number: 3 12/14

72/80 - 54/14 is -207/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 14 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   72/80 = 72 × 7/80 × 7 = 504/560
3. Likewise, for the 2nd fraction, since 14 × 40 = 560,
   54/14 = 54 × 40/14 × 40 = 2160/560
4. Subtract the two like fractions:
   504/560 - 2160/560 = 504 - 2160/560 = -1656/560
5. After reducing the fraction, the answer is -207/70

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