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Subtract 5/42 from 30/4

1st number: 7 2/4, 2nd number: 5/42

30/4 - 5/42 is 155/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 42 is 84
  2. For the 1st fraction, since 4 × 21 = 84,
    30/4 = 30 × 21/4 × 21 = 630/84
  3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
    5/42 = 5 × 2/42 × 2 = 10/84
  4. Subtract the two fractions:
    630/84 - 10/84 = 630 - 10/84 = 620/84
  5. After reducing the fraction, the answer is 155/21
  6. In mixed form: 78/21

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