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Subtract 45/70 from 50/21

1st number: 2 8/21, 2nd number: 45/70

50/21 - 45/70 is 73/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 70 is 210
  2. For the 1st fraction, since 21 × 10 = 210,
    50/21 = 50 × 10/21 × 10 = 500/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    45/70 = 45 × 3/70 × 3 = 135/210
  4. Subtract the two fractions:
    500/210 - 135/210 = 500 - 135/210 = 365/210
  5. After reducing the fraction, the answer is 73/42
  6. In mixed form: 131/42

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