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Subtract 21/10 from 10/30

1st number: 10/30, 2nd number: 2 1/10

10/30 - 21/10 is -53/30.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 30 × 1 = 30,
    10/30 = 10 × 1/30 × 1 = 10/30
  3. Likewise, for the 2nd fraction, since 10 × 3 = 30,
    21/10 = 21 × 3/10 × 3 = 63/30
  4. Subtract the two like fractions:
    10/30 - 63/30 = 10 - 63/30 = -53/30

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