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Add 15/75 and 10/21

15/75 + 10/21 is 71/105.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 21 is 525

    Next, find the equivalent fraction of both fractional numbers with denominator 525
  2. For the 1st fraction, since 75 × 7 = 525,
    15/75 = 15 × 7/75 × 7 = 105/525
  3. Likewise, for the 2nd fraction, since 21 × 25 = 525,
    10/21 = 10 × 25/21 × 25 = 250/525
  4. Add the two like fractions:
    105/525 + 250/525 = 105 + 250/525 = 355/525
  5. 355/525 simplified gives 71/105
  6. So, 15/75 + 10/21 = 71/105

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