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Subtract 63/7 from 90/60

1st number: 1 30/60, 2nd number: 9 0/7

90/60 - 63/7 is -15/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 7 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 60 × 7 = 420,
    90/60 = 90 × 7/60 × 7 = 630/420
  3. Likewise, for the 2nd fraction, since 7 × 60 = 420,
    63/7 = 63 × 60/7 × 60 = 3780/420
  4. Subtract the two like fractions:
    630/420 - 3780/420 = 630 - 3780/420 = -3150/420
  5. After reducing the fraction, the answer is -15/2

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