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Subtract 7/9 from 42/12

1st number: 3 6/12, 2nd number: 7/9

42/12 - 7/9 is 49/18.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 9 is 36
  2. For the 1st fraction, since 12 × 3 = 36,
    42/12 = 42 × 3/12 × 3 = 126/36
  3. Likewise, for the 2nd fraction, since 9 × 4 = 36,
    7/9 = 7 × 4/9 × 4 = 28/36
  4. Subtract the two fractions:
    126/36 - 28/36 = 126 - 28/36 = 98/36
  5. After reducing the fraction, the answer is 49/18
  6. In mixed form: 213/18

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