Answers

Subtract 81/72 from 28/14

1^st number: 2 0/14, 2^nd number: 1 9/72

28/14 - 81/72 is 7/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 14 × 36 = 504,
   28/14 = 28 × 36/14 × 36 = 1008/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   81/72 = 81 × 7/72 × 7 = 567/504
4. Subtract the two like fractions:
   1008/504 - 567/504 = 1008 - 567/504 = 441/504
5. After reducing the fraction, the answer is 7/8

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