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Subtract 21/45 from 40/9

1st number: 4 4/9, 2nd number: 21/45

40/9 - 21/45 is 179/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 45 is 45

    Next, find the equivalent fraction of both fractional numbers with denominator 45
  2. For the 1st fraction, since 9 × 5 = 45,
    40/9 = 40 × 5/9 × 5 = 200/45
  3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
    21/45 = 21 × 1/45 × 1 = 21/45
  4. Subtract the two like fractions:
    200/45 - 21/45 = 200 - 21/45 = 179/45
  5. In mixed form: 344/45

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