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Subtract 30/42 from 5/4

1st number: 1 1/4, 2nd number: 30/42

5/4 - 30/42 is 15/28.

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,
    5/4 = 5 × 21/4 × 21 = 105/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    30/42 = 30 × 2/42 × 2 = 60/84
  4. Subtract the two like fractions:
    105/84 - 60/84 = 105 - 60/84 = 45/84
  5. After reducing the fraction, the answer is 15/28

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