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Subtract 6/40 from 21/4

1st number: 5 1/4, 2nd number: 6/40

21/4 - 6/40 is 51/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 40 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 4 × 10 = 40,
    21/4 = 21 × 10/4 × 10 = 210/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    6/40 = 6 × 1/40 × 1 = 6/40
  4. Subtract the two like fractions:
    210/40 - 6/40 = 210 - 6/40 = 204/40
  5. After reducing the fraction, the answer is 51/10
  6. In mixed form: 51/10

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