Answers

Subtract 80/21 from 48/15

1^st number: 3 3/15, 2^nd number: 3 17/21

48/15 - 80/21 is -64/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   48/15 = 48 × 7/15 × 7 = 336/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   80/21 = 80 × 5/21 × 5 = 400/105
4. Subtract the two like fractions:
   336/105 - 400/105 = 336 - 400/105 = -64/105

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