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Add 90/18 and 4/20

1st number: 5 0/18, 2nd number: 4/20

90/18 + 4/20 is 26/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 18 × 10 = 180,
    90/18 = 90 × 10/18 × 10 = 900/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    4/20 = 4 × 9/20 × 9 = 36/180
  4. Add the two like fractions:
    900/180 + 36/180 = 900 + 36/180 = 936/180
  5. 936/180 simplified gives 26/5
  6. So, 90/18 + 4/20 = 26/5
    In mixed form: 51/5

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