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Add 21/72 and 14/80

21/72 + 14/80 is 7/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 72 × 10 = 720,
    21/72 = 21 × 10/72 × 10 = 210/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    14/80 = 14 × 9/80 × 9 = 126/720
  4. Add the two like fractions:
    210/720 + 126/720 = 210 + 126/720 = 336/720
  5. 336/720 simplified gives 7/15
  6. So, 21/72 + 14/80 = 7/15

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