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Subtract 7/42 from 1/5

1/5 - 7/42 is 1/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 42 is 210
  2. For the 1st fraction, since 5 × 42 = 210,
    1/5 = 1 × 42/5 × 42 = 42/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    7/42 = 7 × 5/42 × 5 = 35/210
  4. Subtract the two fractions:
    42/210 - 35/210 = 42 - 35/210 = 7/210
  5. After reducing the fraction, the answer is 1/30

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