Answers

Subtract 63/28 from 45/80

1^st number: 45/80, 2^nd number: 2 7/28

45/80 - 63/28 is -27/16.

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,
   45/80 = 45 × 7/80 × 7 = 315/560
3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
   63/28 = 63 × 20/28 × 20 = 1260/560
4. Subtract the two like fractions:
   315/560 - 1260/560 = 315 - 1260/560 = -945/560
5. After reducing the fraction, the answer is -27/16

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