Answers

Subtract 80/49 from 15/20

1^st number: 15/20, 2^nd number: 1 31/49

15/20 - 80/49 is -173/196.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 49 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 20 × 49 = 980,
   15/20 = 15 × 49/20 × 49 = 735/980
3. Likewise, for the 2nd fraction, since 49 × 20 = 980,
   80/49 = 80 × 20/49 × 20 = 1600/980
4. Subtract the two like fractions:
   735/980 - 1600/980 = 735 - 1600/980 = -865/980
5. After reducing the fraction, the answer is -173/196

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