Answers

Subtract 30/49 from 70/21

1^st number: 3 7/21, 2^nd number: 30/49

70/21 - 30/49 is 400/147.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 49 is 147
   
   Next, find the equivalent fraction of both fractional numbers with denominator 147
2. For the 1st fraction, since 21 × 7 = 147,
   70/21 = 70 × 7/21 × 7 = 490/147
3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
   30/49 = 30 × 3/49 × 3 = 90/147
4. Subtract the two like fractions:
   490/147 - 90/147 = 490 - 90/147 = 400/147
5. In mixed form: 2106/147

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