Answers

Subtract 64/21 from 24/30

1^st number: 24/30, 2^nd number: 3 1/21

24/30 - 64/21 is -236/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 30 × 7 = 210,
   24/30 = 24 × 7/30 × 7 = 168/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   64/21 = 64 × 10/21 × 10 = 640/210
4. Subtract the two like fractions:
   168/210 - 640/210 = 168 - 640/210 = -472/210
5. After reducing the fraction, the answer is -236/105

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