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Subtract 1/42 from 7/4

1st number: 1 3/4, 2nd number: 1/42

7/4 - 1/42 is 145/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 42 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 4 × 21 = 84,
    7/4 = 7 × 21/4 × 21 = 147/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    1/42 = 1 × 2/42 × 2 = 2/84
  4. Subtract the two like fractions:
    147/84 - 2/84 = 147 - 2/84 = 145/84
  5. In mixed form: 161/84

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