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Add 20/24 and 18/90

20/24 + 18/90 is 31/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 90 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 24 × 15 = 360,
    20/24 = 20 × 15/24 × 15 = 300/360
  3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
    18/90 = 18 × 4/90 × 4 = 72/360
  4. Add the two like fractions:
    300/360 + 72/360 = 300 + 72/360 = 372/360
  5. 372/360 simplified gives 31/30
  6. So, 20/24 + 18/90 = 31/30
    In mixed form: 11/30

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