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Subtract 21/30 from 6/4

1st number: 1 2/4, 2nd number: 21/30

6/4 - 21/30 is 4/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 30 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 4 × 15 = 60,
    6/4 = 6 × 15/4 × 15 = 90/60
  3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
    21/30 = 21 × 2/30 × 2 = 42/60
  4. Subtract the two like fractions:
    90/60 - 42/60 = 90 - 42/60 = 48/60
  5. After reducing the fraction, the answer is 4/5

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