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Add 12/70 and 18/45

12/70 + 18/45 is 4/7.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 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,
    18/45 = 18 × 14/45 × 14 = 252/630
  4. Add the two like fractions:
    108/630 + 252/630 = 108 + 252/630 = 360/630
  5. 360/630 simplified gives 4/7
  6. So, 12/70 + 18/45 = 4/7

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