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Subtract 63/84 from 72/70

1st number: 1 2/70, 2nd number: 63/84

72/70 - 63/84 is 39/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 70 × 6 = 420,
    72/70 = 72 × 6/70 × 6 = 432/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    63/84 = 63 × 5/84 × 5 = 315/420
  4. Subtract the two like fractions:
    432/420 - 315/420 = 432 - 315/420 = 117/420
  5. After reducing the fraction, the answer is 39/140

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