Answers

Subtract 70/18 from 81/12

1^st number: 6 9/12, 2^nd number: 3 16/18

81/12 - 70/18 is 103/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 18 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 12 × 3 = 36,
   81/12 = 81 × 3/12 × 3 = 243/36
3. Likewise, for the 2nd fraction, since 18 × 2 = 36,
   70/18 = 70 × 2/18 × 2 = 140/36
4. Subtract the two like fractions:
   243/36 - 140/36 = 243 - 140/36 = 103/36
5. In mixed form: 231/36

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