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Add 12/90 and 20/30

12/90 + 20/30 is 4/5.

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,
    12/90 = 12 × 1/90 × 1 = 12/90
  3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
    20/30 = 20 × 3/30 × 3 = 60/90
  4. Add the two fractions:
    12/90 + 60/90 = 12 + 60/90 = 72/90
  5. 72/90 simplified gives 4/5
  6. So, 12/90 + 20/30 = 4/5

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