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Add 18/3 and 90/20

1st number: 6 0/3, 2nd number: 4 10/20

18/3 + 90/20 is 21/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 20 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 3 × 20 = 60,
    18/3 = 18 × 20/3 × 20 = 360/60
  3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
    90/20 = 90 × 3/20 × 3 = 270/60
  4. Add the two like fractions:
    360/60 + 270/60 = 360 + 270/60 = 630/60
  5. 630/60 simplified gives 21/2
  6. So, 18/3 + 90/20 = 21/2
    In mixed form: 101/2

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