Answers

Subtract 70/81 from 18/7

1^st number: 2 4/7, 2^nd number: 70/81

18/7 - 70/81 is 968/567.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 7 × 81 = 567,
   18/7 = 18 × 81/7 × 81 = 1458/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   70/81 = 70 × 7/81 × 7 = 490/567
4. Subtract the two like fractions:
   1458/567 - 490/567 = 1458 - 490/567 = 968/567
5. In mixed form: 1401/567

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