Answers

Subtract 1/42 from 70/21

1^st number: 3 7/21, 2^nd number: 1/42

70/21 - 1/42 is 139/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   70/21 = 70 × 2/21 × 2 = 140/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   1/42 = 1 × 1/42 × 1 = 1/42
4. Subtract the two like fractions:
   140/42 - 1/42 = 140 - 1/42 = 139/42
5. In mixed form: 313/42

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