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Subtract 12/6 from 21/8

1st number: 2 5/8, 2nd number: 2 0/6

21/8 - 12/6 is 5/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 6 is 24

    Next, find the equivalent fraction of both fractional numbers with denominator 24
  2. For the 1st fraction, since 8 × 3 = 24,
    21/8 = 21 × 3/8 × 3 = 63/24
  3. Likewise, for the 2nd fraction, since 6 × 4 = 24,
    12/6 = 12 × 4/6 × 4 = 48/24
  4. Subtract the two like fractions:
    63/24 - 48/24 = 63 - 48/24 = 15/24
  5. After reducing the fraction, the answer is 5/8

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