Answers

Subtract 45/63 from 49/80

49/80 - 45/63 is -57/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 63 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 80 × 63 = 5040,
   49/80 = 49 × 63/80 × 63 = 3087/5040
3. Likewise, for the 2nd fraction, since 63 × 80 = 5040,
   45/63 = 45 × 80/63 × 80 = 3600/5040
4. Subtract the two like fractions:
   3087/5040 - 3600/5040 = 3087 - 3600/5040 = -513/5040
5. After reducing the fraction, the answer is -57/560

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