Answers

Subtract 63/80 from 20/12

1^st number: 1 8/12, 2^nd number: 63/80

20/12 - 63/80 is 211/240.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 12 × 20 = 240,
   20/12 = 20 × 20/12 × 20 = 400/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   63/80 = 63 × 3/80 × 3 = 189/240
4. Subtract the two like fractions:
   400/240 - 189/240 = 400 - 189/240 = 211/240

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