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Add 30/8 and 70/84

1st number: 3 6/8, 2nd number: 70/84

30/8 + 70/84 is 55/12.

Steps for adding 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,
    70/84 = 70 × 2/84 × 2 = 140/168
  4. Add the two like fractions:
    630/168 + 140/168 = 630 + 140/168 = 770/168
  5. 770/168 simplified gives 55/12
  6. So, 30/8 + 70/84 = 55/12
    In mixed form: 47/12

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