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Subtract 6/8 from 21/4

1st number: 5 1/4, 2nd number: 6/8

21/4 - 6/8 is 9/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 8 is 8
  2. For the 1st fraction, since 4 × 2 = 8,
    21/4 = 21 × 2/4 × 2 = 42/8
  3. Likewise, for the 2nd fraction, since 8 × 1 = 8,
    6/8 = 6 × 1/8 × 1 = 6/8
  4. Subtract the two fractions:
    42/8 - 6/8 = 42 - 6/8 = 36/8
  5. After reducing the fraction, the answer is 9/2
  6. In mixed form: 41/2

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