Answers

Subtract 70/81 from 28/10

1^st number: 2 8/10, 2^nd number: 70/81

28/10 - 70/81 is 784/405.

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,
   28/10 = 28 × 81/10 × 81 = 2268/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   70/81 = 70 × 10/81 × 10 = 700/810
4. Subtract the two like fractions:
   2268/810 - 700/810 = 2268 - 700/810 = 1568/810
5. After reducing the fraction, the answer is 784/405
6. In mixed form: 1379/405

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