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Subtract 90/6 from 42/15

1st number: 2 12/15, 2nd number: 15 0/6

42/15 - 90/6 is -61/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 6 is 30
  2. For the 1st fraction, since 15 × 2 = 30,
    42/15 = 42 × 2/15 × 2 = 84/30
  3. Likewise, for the 2nd fraction, since 6 × 5 = 30,
    90/6 = 90 × 5/6 × 5 = 450/30
  4. Subtract the two fractions:
    84/30 - 450/30 = 84 - 450/30 = -366/30
  5. After reducing the fraction, the answer is -61/5

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