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Subtract 6/90 from 20/14

1st number: 1 6/14, 2nd number: 6/90

20/14 - 6/90 is 143/105.

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,
    20/14 = 20 × 45/14 × 45 = 900/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    6/90 = 6 × 7/90 × 7 = 42/630
  4. Subtract the two fractions:
    900/630 - 42/630 = 900 - 42/630 = 858/630
  5. After reducing the fraction, the answer is 143/105
  6. In mixed form: 138/105

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