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Subtract 7/12 from 90/42

1st number: 2 6/42, 2nd number: 7/12

90/42 - 7/12 is 131/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 42 × 2 = 84,
    90/42 = 90 × 2/42 × 2 = 180/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    7/12 = 7 × 7/12 × 7 = 49/84
  4. Subtract the two like fractions:
    180/84 - 49/84 = 180 - 49/84 = 131/84
  5. In mixed form: 147/84

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