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Subtract 80/60 from 15/90

1st number: 15/90, 2nd number: 1 20/60

15/90 - 80/60 is -7/6.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 60 is 180
  2. For the 1st fraction, since 90 × 2 = 180,
    15/90 = 15 × 2/90 × 2 = 30/180
  3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
    80/60 = 80 × 3/60 × 3 = 240/180
  4. Subtract the two fractions:
    30/180 - 240/180 = 30 - 240/180 = -210/180
  5. After reducing the fraction, the answer is -7/6

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