Answers

Subtract 72/7 from 81/8

1^st number: 10 1/8, 2^nd number: 10 2/7

81/8 - 72/7 is -9/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 7 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 8 × 7 = 56,
   81/8 = 81 × 7/8 × 7 = 567/56
3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
   72/7 = 72 × 8/7 × 8 = 576/56
4. Subtract the two like fractions:
   567/56 - 576/56 = 567 - 576/56 = -9/56

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