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Subtract 35/30 from 1/42

1st number: 1/42, 2nd number: 1 5/30

1/42 - 35/30 is -8/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 42 × 5 = 210,
    1/42 = 1 × 5/42 × 5 = 5/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    35/30 = 35 × 7/30 × 7 = 245/210
  4. Subtract the two like fractions:
    5/210 - 245/210 = 5 - 245/210 = -240/210
  5. After reducing the fraction, the answer is -8/7

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