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Add 16/80 and 21/45

16/80 + 21/45 is 2/3.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 45 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    16/80 = 16 × 9/80 × 9 = 144/720
  3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
    21/45 = 21 × 16/45 × 16 = 336/720
  4. Add the two like fractions:
    144/720 + 336/720 = 144 + 336/720 = 480/720
  5. 480/720 simplified gives 2/3
  6. So, 16/80 + 21/45 = 2/3

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