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Subtract 20/18 from 5/15

1st number: 5/15, 2nd number: 1 2/18

5/15 - 20/18 is -7/9.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90
  2. For the 1st fraction, since 15 × 6 = 90,
    5/15 = 5 × 6/15 × 6 = 30/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    20/18 = 20 × 5/18 × 5 = 100/90
  4. Subtract the two fractions:
    30/90 - 100/90 = 30 - 100/90 = -70/90
  5. After reducing the fraction, the answer is -7/9

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