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Add 3/9 and 12/70

3/9 + 12/70 is 53/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 9 × 70 = 630,
    3/9 = 3 × 70/9 × 70 = 210/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    12/70 = 12 × 9/70 × 9 = 108/630
  4. Add the two like fractions:
    210/630 + 108/630 = 210 + 108/630 = 318/630
  5. 318/630 simplified gives 53/105
  6. So, 3/9 + 12/70 = 53/105

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