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Subtract 8/21 from 40/9

1st number: 4 4/9, 2nd number: 8/21

40/9 - 8/21 is 256/63.

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,
    8/21 = 8 × 3/21 × 3 = 24/63
  4. Subtract the two fractions:
    280/63 - 24/63 = 280 - 24/63 = 256/63
  5. In mixed form: 44/63

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