Answers

Subtract 96/12 from 21/80

1^st number: 21/80, 2^nd number: 8 0/12

21/80 - 96/12 is -619/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 12 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 80 × 3 = 240,
   21/80 = 21 × 3/80 × 3 = 63/240
3. Likewise, for the 2nd fraction, since 12 × 20 = 240,
   96/12 = 96 × 20/12 × 20 = 1920/240
4. Subtract the two like fractions:
   63/240 - 1920/240 = 63 - 1920/240 = -1857/240
5. After reducing the fraction, the answer is -619/80

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