Answers

Subtract 49/80 from 12/63

12/63 - 49/80 is -709/1680.

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,
   12/63 = 12 × 80/63 × 80 = 960/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   49/80 = 49 × 63/80 × 63 = 3087/5040
4. Subtract the two like fractions:
   960/5040 - 3087/5040 = 960 - 3087/5040 = -2127/5040
5. After reducing the fraction, the answer is -709/1680

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