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Add 21/25 and 4/80

21/25 + 4/80 is 89/100.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 25 and 80 is 400

    Next, find the equivalent fraction of both fractional numbers with denominator 400
  2. For the 1st fraction, since 25 × 16 = 400,
    21/25 = 21 × 16/25 × 16 = 336/400
  3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
    4/80 = 4 × 5/80 × 5 = 20/400
  4. Add the two like fractions:
    336/400 + 20/400 = 336 + 20/400 = 356/400
  5. 356/400 simplified gives 89/100
  6. So, 21/25 + 4/80 = 89/100

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