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Subtract 12/84 from 30/10

1st number: 3 0/10, 2nd number: 12/84

30/10 - 12/84 is 20/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 10 × 42 = 420,
    30/10 = 30 × 42/10 × 42 = 1260/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    12/84 = 12 × 5/84 × 5 = 60/420
  4. Subtract the two like fractions:
    1260/420 - 60/420 = 1260 - 60/420 = 1200/420
  5. After reducing the fraction, the answer is 20/7
  6. In mixed form: 26/7

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