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Add 9/45 and 28/42

9/45 + 28/42 is 13/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 42 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 42 × 15 = 630,
    28/42 = 28 × 15/42 × 15 = 420/630
  4. Add the two like fractions:
    126/630 + 420/630 = 126 + 420/630 = 546/630
  5. 546/630 simplified gives 13/15
  6. So, 9/45 + 28/42 = 13/15

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