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Subtract 3/40 from 42/4

1st number: 10 2/4, 2nd number: 3/40

42/4 - 3/40 is 417/40.

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,
    42/4 = 42 × 10/4 × 10 = 420/40
  3. Likewise, for the 2nd fraction, since 40 × 1 = 40,
    3/40 = 3 × 1/40 × 1 = 3/40
  4. Subtract the two like fractions:
    420/40 - 3/40 = 420 - 3/40 = 417/40
  5. In mixed form: 1017/40

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