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Add 28/45 and 18/70

28/45 + 18/70 is 277/315.

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,
    28/45 = 28 × 14/45 × 14 = 392/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    18/70 = 18 × 9/70 × 9 = 162/630
  4. Add the two like fractions:
    392/630 + 162/630 = 392 + 162/630 = 554/630
  5. 554/630 simplified gives 277/315
  6. So, 28/45 + 18/70 = 277/315

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