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Subtract 35/42 from 21/10

1st number: 2 1/10, 2nd number: 35/42

21/10 - 35/42 is 19/15.

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,
    21/10 = 21 × 21/10 × 21 = 441/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    35/42 = 35 × 5/42 × 5 = 175/210
  4. Subtract the two like fractions:
    441/210 - 175/210 = 441 - 175/210 = 266/210
  5. After reducing the fraction, the answer is 19/15
  6. In mixed form: 14/15

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