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Add 4/90 and 5/20

4/90 + 5/20 is 53/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 20 is 180
  2. For the 1st fraction, since 90 × 2 = 180,
    4/90 = 4 × 2/90 × 2 = 8/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    5/20 = 5 × 9/20 × 9 = 45/180
  4. Add the two fractions:
    8/180 + 45/180 = 8 + 45/180 = 53/180

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