Answers

Subtract 63/80 from 28/63

28/63 - 63/80 is -247/720.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   28/63 = 28 × 80/63 × 80 = 2240/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   63/80 = 63 × 63/80 × 63 = 3969/5040
4. Subtract the two like fractions:
   2240/5040 - 3969/5040 = 2240 - 3969/5040 = -1729/5040
5. After reducing the fraction, the answer is -247/720

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