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Add 84/12 and 20/70

1st number: 7 0/12, 2nd number: 20/70

84/12 + 20/70 is 51/7.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 70 is 420
  2. For the 1st fraction, since 12 × 35 = 420,
    84/12 = 84 × 35/12 × 35 = 2940/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    20/70 = 20 × 6/70 × 6 = 120/420
  4. Add the two fractions:
    2940/420 + 120/420 = 2940 + 120/420 = 3060/420
  5. 3060/420 simplified gives 51/7
  6. So, 84/12 + 20/70 = 51/7
    In mixed form: 72/7

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