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Add 28/12 and 20/70

1st number: 2 4/12, 2nd number: 20/70

28/12 + 20/70 is 55/21.

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,
    28/12 = 28 × 35/12 × 35 = 980/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    20/70 = 20 × 6/70 × 6 = 120/420
  4. Add the two fractions:
    980/420 + 120/420 = 980 + 120/420 = 1100/420
  5. 1100/420 simplified gives 55/21
  6. So, 28/12 + 20/70 = 55/21
    In mixed form: 213/21

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