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Subtract 40/7 from 40/90

1st number: 40/90, 2nd number: 5 5/7

40/90 - 40/7 is -332/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 7 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    40/90 = 40 × 7/90 × 7 = 280/630
  3. Likewise, for the 2nd fraction, since 7 × 90 = 630,
    40/7 = 40 × 90/7 × 90 = 3600/630
  4. Subtract the two fractions:
    280/630 - 3600/630 = 280 - 3600/630 = -3320/630
  5. After reducing the fraction, the answer is -332/63

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