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Subtract 90/36 from 84/45

1st number: 1 39/45, 2nd number: 2 18/36

84/45 - 90/36 is -19/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 36 is 180
  2. For the 1st fraction, since 45 × 4 = 180,
    84/45 = 84 × 4/45 × 4 = 336/180
  3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
    90/36 = 90 × 5/36 × 5 = 450/180
  4. Subtract the two fractions:
    336/180 - 450/180 = 336 - 450/180 = -114/180
  5. After reducing the fraction, the answer is -19/30

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