Answers

Subtract 18/7 from 81/56

1^st number: 1 25/56, 2^nd number: 2 4/7

81/56 - 18/7 is -9/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 7 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 56 × 1 = 56,
   81/56 = 81 × 1/56 × 1 = 81/56
3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
   18/7 = 18 × 8/7 × 8 = 144/56
4. Subtract the two like fractions:
   81/56 - 144/56 = 81 - 144/56 = -63/56
5. After reducing the fraction, the answer is -9/8

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