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Subtract 21/36 from 70/63

1st number: 1 7/63, 2nd number: 21/36

70/63 - 21/36 is 19/36.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 36 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 63 × 4 = 252,
    70/63 = 70 × 4/63 × 4 = 280/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    21/36 = 21 × 7/36 × 7 = 147/252
  4. Subtract the two like fractions:
    280/252 - 147/252 = 280 - 147/252 = 133/252
  5. After reducing the fraction, the answer is 19/36

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