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Add 80/20 and 5/21

1st number: 4 0/20, 2nd number: 5/21

80/20 + 5/21 is 89/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 21 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 20 × 21 = 420,
    80/20 = 80 × 21/20 × 21 = 1680/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    5/21 = 5 × 20/21 × 20 = 100/420
  4. Add the two like fractions:
    1680/420 + 100/420 = 1680 + 100/420 = 1780/420
  5. 1780/420 simplified gives 89/21
  6. So, 80/20 + 5/21 = 89/21
    In mixed form: 45/21

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