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Subtract 16/9 from 21/36

1st number: 21/36, 2nd number: 1 7/9

21/36 - 16/9 is -43/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 9 is 36

    Next, find the equivalent fraction of both fractional numbers with denominator 36
  2. For the 1st fraction, since 36 × 1 = 36,
    21/36 = 21 × 1/36 × 1 = 21/36
  3. Likewise, for the 2nd fraction, since 9 × 4 = 36,
    16/9 = 16 × 4/9 × 4 = 64/36
  4. Subtract the two like fractions:
    21/36 - 64/36 = 21 - 64/36 = -43/36

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