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Subtract 9/42 from 27/10

1st number: 2 7/10, 2nd number: 9/42

27/10 - 9/42 is 87/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 42 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 10 × 21 = 210,
    27/10 = 27 × 21/10 × 21 = 567/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    9/42 = 9 × 5/42 × 5 = 45/210
  4. Subtract the two like fractions:
    567/210 - 45/210 = 567 - 45/210 = 522/210
  5. After reducing the fraction, the answer is 87/35
  6. In mixed form: 217/35

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