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Add 20/12 and 18/90

1st number: 1 8/12, 2nd number: 18/90

20/12 + 18/90 is 28/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 90 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 12 × 15 = 180,
    20/12 = 20 × 15/12 × 15 = 300/180
  3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
    18/90 = 18 × 2/90 × 2 = 36/180
  4. Add the two like fractions:
    300/180 + 36/180 = 300 + 36/180 = 336/180
  5. 336/180 simplified gives 28/15
  6. So, 20/12 + 18/90 = 28/15
    In mixed form: 113/15

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