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Subtract 21/3 from 9/10

1st number: 9/10, 2nd number: 7 0/3

9/10 - 21/3 is -61/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 3 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 10 × 3 = 30,
    9/10 = 9 × 3/10 × 3 = 27/30
  3. Likewise, for the 2nd fraction, since 3 × 10 = 30,
    21/3 = 21 × 10/3 × 10 = 210/30
  4. Subtract the two like fractions:
    27/30 - 210/30 = 27 - 210/30 = -183/30
  5. After reducing the fraction, the answer is -61/10

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