Answers

Subtract 63/56 from 10/21

1^st number: 10/21, 2^nd number: 1 7/56

10/21 - 63/56 is -109/168.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 56 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 21 × 8 = 168,
   10/21 = 10 × 8/21 × 8 = 80/168
3. Likewise, for the 2nd fraction, since 56 × 3 = 168,
   63/56 = 63 × 3/56 × 3 = 189/168
4. Subtract the two like fractions:
   80/168 - 189/168 = 80 - 189/168 = -109/168

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