Answers

Subtract 63/28 from 54/80

1^st number: 54/80, 2^nd number: 2 7/28

54/80 - 63/28 is -63/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 28 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   54/80 = 54 × 7/80 × 7 = 378/560
3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
   63/28 = 63 × 20/28 × 20 = 1260/560
4. Subtract the two like fractions:
   378/560 - 1260/560 = 378 - 1260/560 = -882/560
5. After reducing the fraction, the answer is -63/40

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