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Subtract 64/10 from 1/42

1st number: 1/42, 2nd number: 6 4/10

1/42 - 64/10 is -1339/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 10 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 10 × 21 = 210,
    64/10 = 64 × 21/10 × 21 = 1344/210
  4. Subtract the two like fractions:
    5/210 - 1344/210 = 5 - 1344/210 = -1339/210

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