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Add 8/28 and 15/90

8/28 + 15/90 is 19/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 90 is 1260
  2. For the 1st fraction, since 28 × 45 = 1260,
    8/28 = 8 × 45/28 × 45 = 360/1260
  3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
    15/90 = 15 × 14/90 × 14 = 210/1260
  4. Add the two fractions:
    360/1260 + 210/1260 = 360 + 210/1260 = 570/1260
  5. 570/1260 simplified gives 19/42
  6. So, 8/28 + 15/90 = 19/42

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