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Add 20/45 and 4/90

20/45 + 4/90 is 22/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 90 is 90
  2. For the 1st fraction, since 45 × 2 = 90,
    20/45 = 20 × 2/45 × 2 = 40/90
  3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
    4/90 = 4 × 1/90 × 1 = 4/90
  4. Add the two fractions:
    40/90 + 4/90 = 40 + 4/90 = 44/90
  5. 44/90 simplified gives 22/45
  6. So, 20/45 + 4/90 = 22/45

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