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Subtract 3/42 from 70/18

1st number: 3 16/18, 2nd number: 3/42

70/18 - 3/42 is 481/126.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 42 is 126

    Next, find the equivalent fraction of both fractional numbers with denominator 126
  2. For the 1st fraction, since 18 × 7 = 126,
    70/18 = 70 × 7/18 × 7 = 490/126
  3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
    3/42 = 3 × 3/42 × 3 = 9/126
  4. Subtract the two like fractions:
    490/126 - 9/126 = 490 - 9/126 = 481/126
  5. In mixed form: 3103/126

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