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Subtract 18/84 from 30/8

1st number: 3 6/8, 2nd number: 18/84

30/8 - 18/84 is 99/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 84 is 168

    Next, find the equivalent fraction of both fractional numbers with denominator 168
  2. For the 1st fraction, since 8 × 21 = 168,
    30/8 = 30 × 21/8 × 21 = 630/168
  3. Likewise, for the 2nd fraction, since 84 × 2 = 168,
    18/84 = 18 × 2/84 × 2 = 36/168
  4. Subtract the two like fractions:
    630/168 - 36/168 = 630 - 36/168 = 594/168
  5. After reducing the fraction, the answer is 99/28
  6. In mixed form: 315/28

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