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Subtract 7/84 from 90/30

1st number: 3 0/30, 2nd number: 7/84

90/30 - 7/84 is 35/12.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 84 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 30 × 14 = 420,
    90/30 = 90 × 14/30 × 14 = 1260/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    7/84 = 7 × 5/84 × 5 = 35/420
  4. Subtract the two like fractions:
    1260/420 - 35/420 = 1260 - 35/420 = 1225/420
  5. After reducing the fraction, the answer is 35/12
  6. In mixed form: 211/12

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