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Subtract 10/21 from 42/75

42/75 - 10/21 is 44/525.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 21 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 75 × 7 = 525,
    42/75 = 42 × 7/75 × 7 = 294/525
  3. Likewise, for the 2nd fraction, since 21 × 25 = 525,
    10/21 = 10 × 25/21 × 25 = 250/525
  4. Subtract the two like fractions:
    294/525 - 250/525 = 294 - 250/525 = 44/525

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