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Subtract 30/50 from 21/30

21/30 - 30/50 is 1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 50 is 150

    Next, find the equivalent fraction of both fractional numbers with denominator 150
  2. For the 1st fraction, since 30 × 5 = 150,
    21/30 = 21 × 5/30 × 5 = 105/150
  3. Likewise, for the 2nd fraction, since 50 × 3 = 150,
    30/50 = 30 × 3/50 × 3 = 90/150
  4. Subtract the two like fractions:
    105/150 - 90/150 = 105 - 90/150 = 15/150
  5. After reducing the fraction, the answer is 1/10

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