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Add 70/12 and 84/18

1st number: 5 10/12, 2nd number: 4 12/18

70/12 + 84/18 is 21/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 18 is 36

    Next, find the equivalent fraction of both fractional numbers with denominator 36
  2. For the 1st fraction, since 12 × 3 = 36,
    70/12 = 70 × 3/12 × 3 = 210/36
  3. Likewise, for the 2nd fraction, since 18 × 2 = 36,
    84/18 = 84 × 2/18 × 2 = 168/36
  4. Add the two like fractions:
    210/36 + 168/36 = 210 + 168/36 = 378/36
  5. 378/36 simplified gives 21/2
  6. So, 70/12 + 84/18 = 21/2
    In mixed form: 101/2

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