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Add 20/90 and 15/30

20/90 + 15/30 is 13/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 30 is 90
  2. For the 1st fraction, since 90 × 1 = 90,
    20/90 = 20 × 1/90 × 1 = 20/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    15/30 = 15 × 3/30 × 3 = 45/90
  4. Add the two fractions:
    20/90 + 45/90 = 20 + 45/90 = 65/90
  5. 65/90 simplified gives 13/18
  6. So, 20/90 + 15/30 = 13/18

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