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Add 28/21 and 1/80

1st number: 1 7/21, 2nd number: 1/80

28/21 + 1/80 is 323/240.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 80 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 21 × 80 = 1680,
    28/21 = 28 × 80/21 × 80 = 2240/1680
  3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
    1/80 = 1 × 21/80 × 21 = 21/1680
  4. Add the two like fractions:
    2240/1680 + 21/1680 = 2240 + 21/1680 = 2261/1680
  5. 2261/1680 simplified gives 323/240
  6. So, 28/21 + 1/80 = 323/240
    In mixed form: 183/240

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