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Add 5/21 and 20/5

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

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

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 5 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 21 × 5 = 105,
    5/21 = 5 × 5/21 × 5 = 25/105
  3. Likewise, for the 2nd fraction, since 5 × 21 = 105,
    20/5 = 20 × 21/5 × 21 = 420/105
  4. Add the two like fractions:
    25/105 + 420/105 = 25 + 420/105 = 445/105
  5. 445/105 simplified gives 89/21
  6. So, 5/21 + 20/5 = 89/21
    In mixed form: 45/21

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