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Subtract 18/8 from 15/2

1st number: 7 1/2, 2nd number: 2 2/8

15/2 - 18/8 is 21/4.

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,
    15/2 = 15 × 4/2 × 4 = 60/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    18/8 = 18 × 1/8 × 1 = 18/8
  4. Subtract the two fractions:
    60/8 - 18/8 = 60 - 18/8 = 42/8
  5. After reducing the fraction, the answer is 21/4
  6. In mixed form: 51/4

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