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Subtract 63/7 from 90/40

1st number: 2 10/40, 2nd number: 9 0/7

90/40 - 63/7 is -27/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    90/40 = 90 × 7/40 × 7 = 630/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    63/7 = 63 × 40/7 × 40 = 2520/280
  4. Subtract the two like fractions:
    630/280 - 2520/280 = 630 - 2520/280 = -1890/280
  5. After reducing the fraction, the answer is -27/4

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