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Add 20/75 and 12/90

20/75 + 12/90 is 2/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 90 is 450
  2. For the 1st fraction, since 75 × 6 = 450,
    20/75 = 20 × 6/75 × 6 = 120/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    12/90 = 12 × 5/90 × 5 = 60/450
  4. Add the two fractions:
    120/450 + 60/450 = 120 + 60/450 = 180/450
  5. 180/450 simplified gives 2/5
  6. So, 20/75 + 12/90 = 2/5

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