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Subtract 4/21 from 40/9

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

40/9 - 4/21 is 268/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 21 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    4/21 = 4 × 3/21 × 3 = 12/63
  4. Subtract the two like fractions:
    280/63 - 12/63 = 280 - 12/63 = 268/63
  5. In mixed form: 416/63

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