Answers

Subtract 28/9 from 70/21

1^st number: 3 7/21, 2^nd number: 3 1/9

70/21 - 28/9 is 2/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   70/21 = 70 × 3/21 × 3 = 210/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   28/9 = 28 × 7/9 × 7 = 196/63
4. Subtract the two like fractions:
   210/63 - 196/63 = 210 - 196/63 = 14/63
5. After reducing the fraction, the answer is 2/9

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