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Subtract 18/40 from 90/14

1st number: 6 6/14, 2nd number: 18/40

90/14 - 18/40 is 837/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 40 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 14 × 20 = 280,
    90/14 = 90 × 20/14 × 20 = 1800/280
  3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
    18/40 = 18 × 7/40 × 7 = 126/280
  4. Subtract the two like fractions:
    1800/280 - 126/280 = 1800 - 126/280 = 1674/280
  5. After reducing the fraction, the answer is 837/140
  6. In mixed form: 5137/140

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