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Subtract 18/8 from 21/2

1st number: 10 1/2, 2nd number: 2 2/8

21/2 - 18/8 is 33/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 8 is 8
  2. For the 1st fraction, since 2 × 4 = 8,
    21/2 = 21 × 4/2 × 4 = 84/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    18/8 = 18 × 1/8 × 1 = 18/8
  4. Subtract the two fractions:
    84/8 - 18/8 = 84 - 18/8 = 66/8
  5. After reducing the fraction, the answer is 33/4
  6. In mixed form: 81/4

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