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Add 28/42 and 54/90

28/42 + 54/90 is 19/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 42 × 15 = 630,
    28/42 = 28 × 15/42 × 15 = 420/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    54/90 = 54 × 7/90 × 7 = 378/630
  4. Add the two like fractions:
    420/630 + 378/630 = 420 + 378/630 = 798/630
  5. 798/630 simplified gives 19/15
  6. So, 28/42 + 54/90 = 19/15
    In mixed form: 14/15

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