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Subtract 63/4 from 54/70

1st number: 54/70, 2nd number: 15 3/4

54/70 - 63/4 is -2097/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 4 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 70 × 2 = 140,
    54/70 = 54 × 2/70 × 2 = 108/140
  3. Likewise, for the 2nd fraction, since 4 × 35 = 140,
    63/4 = 63 × 35/4 × 35 = 2205/140
  4. Subtract the two like fractions:
    108/140 - 2205/140 = 108 - 2205/140 = -2097/140

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