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Subtract 90/63 from 16/15

1st number: 1 1/15, 2nd number: 1 27/63

16/15 - 90/63 is -38/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 63 is 315
  2. For the 1st fraction, since 15 × 21 = 315,
    16/15 = 16 × 21/15 × 21 = 336/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    90/63 = 90 × 5/63 × 5 = 450/315
  4. Subtract the two fractions:
    336/315 - 450/315 = 336 - 450/315 = -114/315
  5. After reducing the fraction, the answer is -38/105

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