Answers

Subtract 70/21 from 18/6

1^st number: 3 0/6, 2^nd number: 3 7/21

18/6 - 70/21 is -1/3.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 6 and 21 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 6 × 7 = 42,
   18/6 = 18 × 7/6 × 7 = 126/42
3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
   70/21 = 70 × 2/21 × 2 = 140/42
4. Subtract the two like fractions:
   126/42 - 140/42 = 126 - 140/42 = -14/42
5. After reducing the fraction, the answer is -1/3

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