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Add 12/70 and 3/45

12/70 + 3/45 is 5/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 45 is 630
  2. For the 1st fraction, since 70 × 9 = 630,
    12/70 = 12 × 9/70 × 9 = 108/630
  3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
    3/45 = 3 × 14/45 × 14 = 42/630
  4. Add the two fractions:
    108/630 + 42/630 = 108 + 42/630 = 150/630
  5. After reducing the fraction, the answer is 5/21

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