Answers

Subtract 21/80 from 15/5

1^st number: 3 0/5, 2^nd number: 21/80

15/5 - 21/80 is 219/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 5 × 16 = 80,
   15/5 = 15 × 16/5 × 16 = 240/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   21/80 = 21 × 1/80 × 1 = 21/80
4. Subtract the two like fractions:
   240/80 - 21/80 = 240 - 21/80 = 219/80
5. In mixed form: 259/80

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