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Add 5/21 and 90/25

1st number: 5/21, 2nd number: 3 15/25

5/21 + 90/25 is 403/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 25 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 21 × 25 = 525,
    5/21 = 5 × 25/21 × 25 = 125/525
  3. Likewise, for the 2nd fraction, since 25 × 21 = 525,
    90/25 = 90 × 21/25 × 21 = 1890/525
  4. Add the two like fractions:
    125/525 + 1890/525 = 125 + 1890/525 = 2015/525
  5. 2015/525 simplified gives 403/105
  6. So, 5/21 + 90/25 = 403/105
    In mixed form: 388/105

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