Answers

Subtract 40/24 from 27/21

1^st number: 1 6/21, 2^nd number: 1 16/24

27/21 - 40/24 is -8/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 24 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 21 × 8 = 168,
   27/21 = 27 × 8/21 × 8 = 216/168
3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
   40/24 = 40 × 7/24 × 7 = 280/168
4. Subtract the two like fractions:
   216/168 - 280/168 = 216 - 280/168 = -64/168
5. After reducing the fraction, the answer is -8/21

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