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Subtract 45/30 from 50/21

1st number: 2 8/21, 2nd number: 1 15/30

50/21 - 45/30 is 37/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 30 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 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 30 × 7 = 210,
    45/30 = 45 × 7/30 × 7 = 315/210
  4. Subtract the two like fractions:
    500/210 - 315/210 = 500 - 315/210 = 185/210
  5. After reducing the fraction, the answer is 37/42

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