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Add 28/42 and 28/90

28/42 + 28/90 is 44/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 42 and 90 is 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,
    28/90 = 28 × 7/90 × 7 = 196/630
  4. Add the two fractions:
    420/630 + 196/630 = 420 + 196/630 = 616/630
  5. 616/630 simplified gives 44/45
  6. So, 28/42 + 28/90 = 44/45

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