Answers

Subtract 20/80 from 84/12

1^st number: 7 0/12, 2^nd number: 20/80

84/12 - 20/80 is 27/4.

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,
   84/12 = 84 × 20/12 × 20 = 1680/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   20/80 = 20 × 3/80 × 3 = 60/240
4. Subtract the two like fractions:
   1680/240 - 60/240 = 1680 - 60/240 = 1620/240
5. After reducing the fraction, the answer is 27/4
6. In mixed form: 63/4

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