Answers

Subtract 80/21 from 35/80

1^st number: 35/80, 2^nd number: 3 17/21

35/80 - 80/21 is -1133/336.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 21 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 80 × 21 = 1680,
   35/80 = 35 × 21/80 × 21 = 735/1680
3. Likewise, for the 2nd fraction, since 21 × 80 = 1680,
   80/21 = 80 × 80/21 × 80 = 6400/1680
4. Subtract the two like fractions:
   735/1680 - 6400/1680 = 735 - 6400/1680 = -5665/1680
5. After reducing the fraction, the answer is -1133/336

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