Answers

Subtract 63/10 from 8/21

1^st number: 8/21, 2^nd number: 6 3/10

8/21 - 63/10 is -1243/210.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 10 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   8/21 = 8 × 10/21 × 10 = 80/210
3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
   63/10 = 63 × 21/10 × 21 = 1323/210
4. Subtract the two like fractions:
   80/210 - 1323/210 = 80 - 1323/210 = -1243/210

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