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Subtract 90/84 from 4/5

1st number: 4/5, 2nd number: 1 6/84

4/5 - 90/84 is -19/70.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 84 is 420
  2. For the 1st fraction, since 5 × 84 = 420,
    4/5 = 4 × 84/5 × 84 = 336/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    90/84 = 90 × 5/84 × 5 = 450/420
  4. Subtract the two fractions:
    336/420 - 450/420 = 336 - 450/420 = -114/420
  5. After reducing the fraction, the answer is -19/70

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