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Subtract 21/6 from 10/8

1st number: 1 2/8, 2nd number: 3 3/6

10/8 - 21/6 is -9/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 6 is 24
  2. For the 1st fraction, since 8 × 3 = 24,
    10/8 = 10 × 3/8 × 3 = 30/24
  3. Likewise, for the 2nd fraction, since 6 × 4 = 24,
    21/6 = 21 × 4/6 × 4 = 84/24
  4. Subtract the two fractions:
    30/24 - 84/24 = 30 - 84/24 = -54/24
  5. After reducing the fraction, the answer is -9/4

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