Answers

Subtract 40/21 from 12/35

1^st number: 12/35, 2^nd number: 1 19/21

12/35 - 40/21 is -164/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 35 × 3 = 105,
   12/35 = 12 × 3/35 × 3 = 36/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   40/21 = 40 × 5/21 × 5 = 200/105
4. Subtract the two like fractions:
   36/105 - 200/105 = 36 - 200/105 = -164/105

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