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Add 20/90 and 12/80

20/90 + 12/80 is 67/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 90 × 8 = 720,
    20/90 = 20 × 8/90 × 8 = 160/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    12/80 = 12 × 9/80 × 9 = 108/720
  4. Add the two like fractions:
    160/720 + 108/720 = 160 + 108/720 = 268/720
  5. 268/720 simplified gives 67/180
  6. So, 20/90 + 12/80 = 67/180

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