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Add 20/75 and 4/90

20/75 + 4/90 is 14/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 90 is 450
  2. For the 1st fraction, since 75 × 6 = 450,
    20/75 = 20 × 6/75 × 6 = 120/450
  3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
    4/90 = 4 × 5/90 × 5 = 20/450
  4. Add the two fractions:
    120/450 + 20/450 = 120 + 20/450 = 140/450
  5. 140/450 simplified gives 14/45
  6. So, 20/75 + 4/90 = 14/45

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