Answers

Subtract 7/81 from 84/70

1^st number: 1 14/70, 2^nd number: 7/81

84/70 - 7/81 is 451/405.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 81 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 70 × 81 = 5670,
   84/70 = 84 × 81/70 × 81 = 6804/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   7/81 = 7 × 70/81 × 70 = 490/5670
4. Subtract the two like fractions:
   6804/5670 - 490/5670 = 6804 - 490/5670 = 6314/5670
5. After reducing the fraction, the answer is 451/405
6. In mixed form: 146/405

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