Answers

Subtract 40/21 from 40/9

1^st number: 4 4/9, 2^nd number: 1 19/21

40/9 - 40/21 is 160/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 21 is 63
2. For the 1st fraction, since 9 × 7 = 63,
   40/9 = 40 × 7/9 × 7 = 280/63
3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
   40/21 = 40 × 3/21 × 3 = 120/63
4. Subtract the two fractions:
   280/63 - 120/63 = 280 - 120/63 = 160/63
5. In mixed form: 234/63

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