Answers

Subtract 3/81 from 72/10

1^st number: 7 2/10, 2^nd number: 3/81

72/10 - 3/81 is 967/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 10 × 81 = 810,
   72/10 = 72 × 81/10 × 81 = 5832/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   3/81 = 3 × 10/81 × 10 = 30/810
4. Subtract the two like fractions:
   5832/810 - 30/810 = 5832 - 30/810 = 5802/810
5. After reducing the fraction, the answer is 967/135
6. In mixed form: 722/135

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