Answers

Subtract 80/12 from 9/15

1^st number: 9/15, 2^nd number: 6 8/12

9/15 - 80/12 is -91/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 12 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   9/15 = 9 × 4/15 × 4 = 36/60
3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
   80/12 = 80 × 5/12 × 5 = 400/60
4. Subtract the two like fractions:
   36/60 - 400/60 = 36 - 400/60 = -364/60
5. After reducing the fraction, the answer is -91/15

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