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Add 21/80 and 20/50

21/80 + 20/50 is 53/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 50 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 80 × 5 = 400,
    21/80 = 21 × 5/80 × 5 = 105/400
  3. Likewise, for the 2nd fraction, since 50 × 8 = 400,
    20/50 = 20 × 8/50 × 8 = 160/400
  4. Add the two like fractions:
    105/400 + 160/400 = 105 + 160/400 = 265/400
  5. 265/400 simplified gives 53/80
  6. So, 21/80 + 20/50 = 53/80

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