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Subtract 30/90 from 4/14

4/14 - 30/90 is -1/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 90 is 630
  2. For the 1st fraction, since 14 × 45 = 630,
    4/14 = 4 × 45/14 × 45 = 180/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    30/90 = 30 × 7/90 × 7 = 210/630
  4. Subtract the two fractions:
    180/630 - 210/630 = 180 - 210/630 = -30/630
  5. After reducing the fraction, the answer is -1/21

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