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Add 45/70 and 5/12

45/70 + 5/12 is 89/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 12 is 420
  2. For the 1st fraction, since 70 × 6 = 420,
    45/70 = 45 × 6/70 × 6 = 270/420
  3. Likewise, for the 2nd fraction, since 12 × 35 = 420,
    5/12 = 5 × 35/12 × 35 = 175/420
  4. Add the two fractions:
    270/420 + 175/420 = 270 + 175/420 = 445/420
  5. After reducing the fraction, the answer is 89/84
  6. In mixed form: 15/84

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