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Add 20/25 and 28/40

20/25 + 28/40 is 3/2.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 40 is 200

    Next, find the equivalent fraction of both fractional numbers with denominator 200
  2. For the 1st fraction, since 25 × 8 = 200,
    20/25 = 20 × 8/25 × 8 = 160/200
  3. Likewise, for the 2nd fraction, since 40 × 5 = 200,
    28/40 = 28 × 5/40 × 5 = 140/200
  4. Add the two like fractions:
    160/200 + 140/200 = 160 + 140/200 = 300/200
  5. 300/200 simplified gives 3/2
  6. So, 20/25 + 28/40 = 3/2
    In mixed form: 11/2

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