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Subtract 21/3 from 18/6

1st number: 3 0/6, 2nd number: 7 0/3

18/6 - 21/3 is -4/1.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 6 and 3 is 6

    Next, find the equivalent fraction of both fractional numbers with denominator 6
  2. For the 1st fraction, since 6 × 1 = 6,
    18/6 = 18 × 1/6 × 1 = 18/6
  3. Likewise, for the 2nd fraction, since 3 × 2 = 6,
    21/3 = 21 × 2/3 × 2 = 42/6
  4. Subtract the two like fractions:
    18/6 - 42/6 = 18 - 42/6 = -24/6
  5. After reducing the fraction, the answer is -4/1

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