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Subtract 16/21 from 80/9

1st number: 8 8/9, 2nd number: 16/21

80/9 - 16/21 is 512/63.

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,
    80/9 = 80 × 7/9 × 7 = 560/63
  3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
    16/21 = 16 × 3/21 × 3 = 48/63
  4. Subtract the two like fractions:
    560/63 - 48/63 = 560 - 48/63 = 512/63
  5. In mixed form: 88/63

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