Answers

Subtract 70/98 from 30/18

1^st number: 1 12/18, 2^nd number: 70/98

30/18 - 70/98 is 20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 98 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 18 × 49 = 882,
   30/18 = 30 × 49/18 × 49 = 1470/882
3. Likewise, for the 2nd fraction, since 98 × 9 = 882,
   70/98 = 70 × 9/98 × 9 = 630/882
4. Subtract the two like fractions:
   1470/882 - 630/882 = 1470 - 630/882 = 840/882
5. After reducing the fraction, the answer is 20/21

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