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Subtract 7/42 from 1/10

1/10 - 7/42 is -1/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 42 is 210
  2. For the 1st fraction, since 10 × 21 = 210,
    1/10 = 1 × 21/10 × 21 = 21/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    7/42 = 7 × 5/42 × 5 = 35/210
  4. Subtract the two fractions:
    21/210 - 35/210 = 21 - 35/210 = -14/210
  5. After reducing the fraction, the answer is -1/15

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