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Add 9/45 and 12/70

9/45 + 12/70 is 13/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 45 × 14 = 630,
    9/45 = 9 × 14/45 × 14 = 126/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    12/70 = 12 × 9/70 × 9 = 108/630
  4. Add the two like fractions:
    126/630 + 108/630 = 126 + 108/630 = 234/630
  5. 234/630 simplified gives 13/35
  6. So, 9/45 + 12/70 = 13/35

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