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Subtract 10/40 from 35/42

35/42 - 10/40 is 7/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 40 is 840

    Next, find the equivalent fraction of both fractional numbers with denominator 840
  2. For the 1st fraction, since 42 × 20 = 840,
    35/42 = 35 × 20/42 × 20 = 700/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    10/40 = 10 × 21/40 × 21 = 210/840
  4. Subtract the two like fractions:
    700/840 - 210/840 = 700 - 210/840 = 490/840
  5. After reducing the fraction, the answer is 7/12

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