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Add 3/80 and 21/18

1st number: 3/80, 2nd number: 1 3/18

3/80 + 21/18 is 289/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 18 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 80 × 9 = 720,
    3/80 = 3 × 9/80 × 9 = 27/720
  3. Likewise, for the 2nd fraction, since 18 × 40 = 720,
    21/18 = 21 × 40/18 × 40 = 840/720
  4. Add the two like fractions:
    27/720 + 840/720 = 27 + 840/720 = 867/720
  5. 867/720 simplified gives 289/240
  6. So, 3/80 + 21/18 = 289/240
    In mixed form: 149/240

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