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Subtract 3/42 from 2/5

2/5 - 3/42 is 23/70.

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,
    2/5 = 2 × 42/5 × 42 = 84/210
  3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
    3/42 = 3 × 5/42 × 5 = 15/210
  4. Subtract the two fractions:
    84/210 - 15/210 = 84 - 15/210 = 69/210
  5. After reducing the fraction, the answer is 23/70

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