Answers

Subtract 40/7 from 20/15

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

20/15 - 40/7 is -92/21.

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,
   20/15 = 20 × 7/15 × 7 = 140/105
3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
   40/7 = 40 × 15/7 × 15 = 600/105
4. Subtract the two like fractions:
   140/105 - 600/105 = 140 - 600/105 = -460/105
5. After reducing the fraction, the answer is -92/21

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