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Add 21/80 and 21/36

21/80 + 21/36 is 203/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 36 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    21/80 = 21 × 9/80 × 9 = 189/720
  3. Likewise, for the 2nd fraction, since 36 × 20 = 720,
    21/36 = 21 × 20/36 × 20 = 420/720
  4. Add the two like fractions:
    189/720 + 420/720 = 189 + 420/720 = 609/720
  5. 609/720 simplified gives 203/240
  6. So, 21/80 + 21/36 = 203/240

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