Answers

Subtract 12/7 from 7/15

1^st number: 7/15, 2^nd number: 1 5/7

7/15 - 12/7 is -131/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 7 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   7/15 = 7 × 7/15 × 7 = 49/105
3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
   12/7 = 12 × 15/7 × 15 = 180/105
4. Subtract the two like fractions:
   49/105 - 180/105 = 49 - 180/105 = -131/105

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