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Subtract 12/5 from 21/3

1st number: 7 0/3, 2nd number: 2 2/5

21/3 - 12/5 is 23/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 5 is 15

    Next, find the equivalent fraction of both fractional numbers with denominator 15
  2. For the 1st fraction, since 3 × 5 = 15,
    21/3 = 21 × 5/3 × 5 = 105/15
  3. Likewise, for the 2nd fraction, since 5 × 3 = 15,
    12/5 = 12 × 3/5 × 3 = 36/15
  4. Subtract the two like fractions:
    105/15 - 36/15 = 105 - 36/15 = 69/15
  5. After reducing the fraction, the answer is 23/5
  6. In mixed form: 43/5

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