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Subtract 20/84 from 70/15

1st number: 4 10/15, 2nd number: 20/84

70/15 - 20/84 is 31/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 84 is 420
  2. For the 1st fraction, since 15 × 28 = 420,
    70/15 = 70 × 28/15 × 28 = 1960/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    20/84 = 20 × 5/84 × 5 = 100/420
  4. Subtract the two fractions:
    1960/420 - 100/420 = 1960 - 100/420 = 1860/420
  5. After reducing the fraction, the answer is 31/7
  6. In mixed form: 43/7

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